Are porcupines amphibians, reptiles, or birds??? Please help 25 POINTS!!!

Answers

Answer 1

Answer:

rodents

Explanation:

they arent any of those things


Related Questions

A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6.25% of the original radioactive atoms remain? 5 million years old 6.25 million years old 3.75 million years old6 2.5 million years old 1.25 million years old 625 thousand years old

Answers

Answer:

The age of the rock is 5 million years

Explanation:

Fraction of radioactive substance remaining = 6.25% = 625/10000 = 1/16

Number of half-lives undergone by the substance to leave behind 1/16 of the original sample

1/16 = (1/2) * (1/2) * (1/2) *(1/2)

Therefore, the substance have decayed 4 times

One half=life = 1.25 million years

Four half-lives = 4 * 1.25 million years = 5 million years

Therefore, the age of the rock is 5 million years

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A team of engineers is designing a new ship. The engineers first build several models of the ship. Explain in your own words why the models could help the engineers

Answers

Answer:

The model could help the engineers by giving they a prototype to build off of so they have an idea of what they ship looks like, and if the test it, they could troubleshoot and see the errors/successes of the model.

Explanation:

The engineers first build several models of the ship as the model could help the engineers by providing them a prototype to build of so that they have an idea of what or how the ship will looks like, and if they test it, they could troubleshoot and see the errors or successes of the model of the ship.

What are the fields in which science is applied?

Science has the factual based knowledge and it has about the Nature as well as the natural world that has created on the basis of observations and the experiments. It has the study of the experiments and observations and it has totally depend upon the scientific result that has obtained after the scientific experiments.

There are several fields in which science has been applied and these field are healthcare, telemarketing, environmental engineering, banking, government regulation, space, biochemistry, physics, chemistry, biochemistry and astronomy, engineering.

Therefore, The engineers first build several models of the ship as the model could help the engineers by providing them a prototype to build of so that they have an idea of what or how the ship will looks like, and if they test it, they could troubleshoot and see the errors or successes of the model of the ship.

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Given the formula D=M/V, a substance with a Density of 50 gm/cc, with a Volume of 10 cc, has a Mass of ___________
A
500 cc
B
250 cc
C
500 gm
D
500 cc

Answers

Answer:

A

500 cc

Explanation:

D= M/V

50 =M/10

M =50×10

=500 cc.

Hope it helped.

What is 'b' in this linear equation? y = 5x - 6

Answers

The “-6” is the ‘b’
Remember: y=mx+b
-6
the answer is this because the equation is y=mx+b

Evan's nightly chores include washing dishes. His mother cooks everything she prepares a bit too long. Because of this, Evan spends a lot of sweat, effort, and time washing dishes. He sees a commercial on television that claims a new dishwashing detergent, called Brand X, cuts through grease better than its competitor, called Brand Y. They back up their claim with testimonials from people who say they've used this new detergent.

What is a possible testable question (in correct format) that Evan might ask for in this scenario?
IV:
DV:

Answers

Answer:

product X and Y need to be in a controlled test to make see how they do undergoing the same things.

hope this helps :)

Explanation:

When an atom loses an electron, it becomes a?

Answers

when it loses an atom it becomes an ion
It becomes a positive ion . Eg Na lost 1 electron to form Na+ . Vive verca , if an atom gains an electron it becomes negative

Milk sugar is a good source of;
A)galactose
B)glucose
C)fructose

Answers

The correct answer is glucose!


Why must the bonds of these molecules be broken before anything else happens?

Answers

Answer:

Synthesis releases energy because the molecules bond to form a stable configuration and therefore give up energy. The bonded molecules have a lower energy level than free molecules and are held in the new bond.

Explanation:

Chemical reactions make and break the chemical bonds between molecules, resulting in new materials as the products of the chemical reaction. Chemical reactions can occur spontaneously or require an outside trigger such as an input of energy. Breaking chemical bonds absorbs energy, while making new bonds releases energy, with the overall chemical reaction being endothermic or exothermic.

Because molecules must link together to establish a stable structure, they lose energy during synthesis. The newly formed bond holds the bonded molecules, which are at a lower energy level than free molecules.

Why the bonds of molecules are broken?

Because molecules must link together to establish a stable structure, they lose energy during synthesis. The newly formed bond holds the bonded molecules, which are at a lower energy level than free molecules.

Chemical reactions create and destroy the chemical bonds that hold molecules together, creating new materials as their end product. Chemical reactions can start on their own or need an outside trigger, like an energy input. Chemical reactions can be endothermic or exothermic in that breaking chemical bonds takes energy while creating new ones releases it.

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The energy available to consumers determined by subtracting the energy used by plants from the total energy

transformed by the process of photosynthesis.

А

et your pas

Primary productivity

B

Gross primary productivity

С

Net primary productivity

D

Cellular respiration

Answers

Answer:

C. Net Primary productivity

Explanation:

In an the food chain of an ecosystem, energy is constantly being gained and most. Producers are the set of organisms that start the energy cycle via the process of photosynthesis. The gross primary productivity (GPP) is the amount of energy that the producer is able to capture from sunlight during photosynthesis.

The rate at which that captured energy is used to produce chemical organic compounds, which served as food, is called the primary productivity of the producer. However, the NET PRIMARY PRODUCTIVITY (NPP) is the energy available to consumers, which is determined by subtracting the energy used by plants via metabolism, from the total energy transformed by the process of photosynthesis. Hence, mathematically, NPP = GPP - R

Where, R = energy lost via respiration.

please help i will mark brainliest

Answers

Answer:

The vaccine that protect humans from the h1n1 virus is called Panvax vaccine or swine Explanation:They are inactivated H1N1 virus vaccines used for immunization of individuals 6 months of age and older against influenza disease caused by H1N1 2009 virus.

can you pls help me ??​

Answers

Uhhh Photosynthesis?
photosynthesis pretty sure!

Which organelle provides support for the cell and may also help the cell move?
Cell Membrane
Cytoplasm
Cytoskeleton
Ribosome

Answers

Cytoskeleton because it maintains cell's shape, secures organelles in specific positions, allows cytoplasm and vesicles to move within the cell

What process best explains how a nerve cell and a muscle cell can both
develop from the same fertilized egg?
O A. differentiation
O B. natural selection
O C. selective breeding
O D. genetic engineering
Need ASAP!

Answers

Answer:

Im pretty sure its A.

Explanation:

=just took the teskst

Answer:  The correct answer is A. differentiation

Explanation:  Confirmed correct.

I need help with these it’s due 2 o’clock today. Thanks!

Answers

wow that a lot ill get my friend on it.

Which of the following occurs when the tilt of the axis is not toward or away from the sun? A Winter Solstice B Spring Equinox c Summer Solstice d both spring and fall equinox ​

Answers

Answer:

AWinter Solits

Explanation:

Answer:

ROOF ROOF

Explanation:

brainliest.

All human body cells contain 46 chromosomes. However, sperm cells in men and egg cells in women have only 23 chromosomes. This is due to meiosis. How does meiosis accomplish the reduction in chromosomal number?

Answers

Answer:

Two cell divisions after DNA replication

Explanation:

After the DNA is replicated, the cell undergoes two rounds of meiosis to produce 4 cells, each wIth 23 chromosomes. This is how the cell goes from a diploid to a haploid state.

what else is needed to make glycine (amino acid) from a molecule of glucose? Where do you think that comes from

Answers

Answer:

certain amino acids are made of different things but heres overall                                  carbon hydrogen oxygen and nitrogen

Explanation:

To make glycine ( amino acid ) from glucose ; Oxygen, carbon, hydrogen and nitrogen  is needed  They come from the consumption of Protein-rich food and from respiration

Glycine is a naturally occurring/formed amino acid found in humans, the difference between glycine and other amino acids is that it can be found in parts of protein structures in humans and can also be found in several foods consumed by humans like Sugar Cane, meat , and dairy products. glycine also has a hydrogen side chain which is absent in other amino acids.

Hence we can conclude that To make glycine ( amino acid ) from glucose ; Oxygen, carbon or hydrogen  is needed  and they come from the consumption of Protein-rich food and from respiration.

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I need help with this one

Answers

Answer:

B. III and IV

Answer:

b the answer would be b.

Biology I need help please

Answers

Answer:

False

Explanation:

During the citric acid cycle only 1 ATP is produced

Answer:

True

Explanation:

The citric acid cycle also produces 2 ATP by substrate phosphorylation and plays an important role in the flow of carbon through the cell by supplying precursor metabolites for various biosynthetic pathways.

Click on 11:50am. What did Ben’s muscles produce when he ran after his paper.

Answers

Answer:

i guess heat or tension? muscles dont produce much

Explanation:

what did his muscles produce? the only thing i can think of would be tension, because muscles dont produce sweat, heat would also be an option

When Alfred Wegener first noticed that the continents fit together like puzzle pieces, this was

Answers

Answer:

- the discovery of the Pangaea Theory.

In 1912 Alfred Wegener (1880-1930) proposed that the continents were once compressed into a single protocontinent which he called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution.

The east coast of South America and the west coast of Africa seem to fit together like pieces of a jigsaw puzzle, and Wegener discovered their rock layers “fit” just as clearly. South America and Africa were not the only continents with similar geology. Most all of the other continents fit together too.

Answer:

discovery of the Pangaea Theory.

Explanation:

Donna has observed that her father can control the speed of their grandfather clock by adjusting the

height of the weight on the end of the pendulum. Donna thinks that the pendulum will move faster when

the weight is lowered, and wants to test her idea. Donna gets a stopwatch and measures the time it takes

for the pendulum to swing twenty times when the weight is moved to its lowest position. Donna begins to

move the pendulum up by 1 cm and continues to measure the time for twenty swings of the pendulum.

Donna records her data.

Answers

The missing part of the question is as follows:

Position    Time (seconds)

1             23.23

2           21.56

3           20.33

4           19.00

5           18.02

Hypothesis: ____________

Dependent Variable: ____________

Independent Variable: ________________

Constants: __________

Control Group:_________________

Experimental Group: ____________

Answer:

Hypothesis:

if the weight is lowered the pendulum will move faster

Dependent Variable:

Time it takes the pendulum to swing or move

Independent Variable:

the position of the weight

Constants:

same weight and the same number of swings

Control Group:

pendulum at the lowest position

Experimental Group:

different height of pendulums

Explanation:

A hypothesis is a possible explanation for the observation in a given experiment which is "if the weight is lowered the pendulum will move faster" as it states the effect of length of the pendulum on the time it takes to swing.

The dependent variable in an experiment is affected and measured to see the effect which is the time it takes the pendulum to swing or move which is measured here and affected by the independent variable that is the position of the weight.

Constants are the variable that remains constant throughout the experiment that is the same weight and the same number of swings. Control group is the group of subject or condition which minimize the effect of factors or variables except one factor to compare or ensure if the experiment works that are pendulum at the lowest position. The experiment group is the group of a subject that get treatment desired to influence the dependent variable that is the different height of pendulums.

I Need Help On Identifying The Characteristics Of Life That Is Illlustarated By Each Of The Following Statements.

Answers

One grow/develop 2 reproduce 3 obtain/ use energy 4

Which one is the correct answer?

Answers

Answer: D

Explanation: The moon is about a quarter of the size of the earth

Answer:

at first i was going to say C but now iam sure the answer is D

Why does PE = mgh equal PE = Fw h ?

Answers

Answer:

Why is potential energy MGH?

Potential energy is energy an object has because of its position relative to some other object. ... For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

Explanation:

Yes Yes Yes Yes Yes Yes

Compare and contrast a few aspects of animal and plant cells. You can focus on intra- and extracellular structures they share or don't share, but also be sure to describe processes they both utilize or don't both utilize. Some things to consider: How they obtain 'food' (what is their organic carbon source?) What structures do they share that prokaryotes lack? What do they share that all living cells also share? Do they use CO2, and/or O2 in any processes?

Answers

Answer and explanation:

Although they share some similarities because they are both eukaryotes, plant cells and animal cells are quite different from each other, which is logical since they have distinct lives.

For example, animal cells and plant cells both have a cell membrane, but only the plant cells have a cell wall - which is thick and resistant, and this makes sense because they are more exposed to mechanical and osmotic stress.

Since animals can move towards sources of water but plants cannot, there's also a way in which plants store water in the cells: vacuoles. Animal cells have vacuoles as well although they are much smaller than the single huge vacuole that plant cells have.

All living organisms need the energy to sustain different cellular processes. The organelle in charge of the chemical reactions behind the obtention of energy is the mitochondria, which is present in all cells, but the mitochondrion needs a specific substrate: glucose. Glucose is obtained in diverse ways: animals move and find food that contains glucose in it, while plants produce their own glucose with a specific process called photosynthesis, for which they need an organelle called chloroplast, which animals do not have. In order to transform the glucose into energy, the mitochondria end up generating CO2, which animals expel from their bodies by exhaling. This CO2, now in the air, is used by plant cells as a substrate in photosynthesis (which needs sunlight as well) to produce glucose and also O2, that will be inhaled by animals and used by their tissues.

All living organisms have one thing in common: they possess DNA. DNA contains all of the genetic information of an organism, and it is present in almost every cell of that organism -if it happens to be a multicellular being-. While prokaryotes have their DNA condensed into a single circular chromosome, eukaryotes like plants and animals, have their DNA form many linear chromosomes (quantity varies according to the species) and these chromosomes are inside a very specialized organelle: the nucleus, which prokaryotes do not have.

State two features of diffusion that do not apply to active transport

Answers

diffusion moves ions from high concentration to low using no metabolic energy and active transport uses metabolic energy in the form of atp to move ions from high concentration to low concentration

The speed at which waves approach the shore depends on the shoreline features and the depth of the sea floor. When a wave reaches the shore, it releases a burst of energy that generates a current which runs parallel to the shoreline. What is this current called?

Answers

Answer:

Longshore current.

Explanation:

A wave is a disturbance which travels through a material medium without any permanent displacement of the particles of the medium. During the propagation of a wave, energy is transmitted from one point to another since waves flow with energy. The higher its speed of propagation, the higher the energy of the wave.

The energy released by the wave at shore produces a current which is referred to as a longshore current.

Answer:

It would be Longshore Current

Explanation:

Hope it helps :)

PART 2: Test Crosses (Medium difficulty problem)
3. Callie has brown eyes, but her husband Joseph has blue eyes. All three of their children have
brown eyes. Do you know what Callie's genotype is? If yes, what is it? If no, why not?

Help please!!

Answers

Answer:

Since Callie has brown eyes, and all her children have brown eyes, we can only assume that the phenotype of brown eyes is dominand and Callie will have a dominant genotype, leaving Joseph to have a reccesive genotype (if Joseph was heterozygous for this aspect, he would have brown eyes) and the children will be heterozygous, with brown eyes as this characteristic predominates over blue eyes.

What type of bond is being formed in this polymerization reaction to link two amino acids together?

Answers

answer : peptide bond or chemical bond between two compounds . (:
Other Questions
The table shows the unit prices (per pound) of tomatoesat different stores.StoreTomato Unit PricesJamal needs to buy 3.25 lb of tomatoes. If Jamal onlyhas $10, from which store(s) could he purchase histomatoes? Check all that apply.Store AStore BStore CStore DStore EA$3.10 per poundB$3.02 per pound$2.97 per poundD$3.07 per poundE$3.09 per pound for an emitted wavelength of 500 nanometers and a redshift of 0.4 what will be the observed wavelength g How did the Enlightenment idea of separation of powers affect the US government?O The US limits its own power to create international treaties.O The US Declaration of Independence ensures that no group has the most power.O The US separates its power between federal and state governments.O The US Constitution separates the government into three branches. 1. Which of the following is not the name of a Java wrapper class from the Java API?A. ByteB. IntC. LongD. Boolean*2. Which of the following statements will cause a compiler error?A. Integer i = new integer ( ) ;*B. Integer j = new integer ("5") ;C. Integer k = Integer.valueOf ("5");D. int m = Integer.pareseInt ("5");3. If variables j and k refer to objects of type Double and j . compareTo (k) returns a value of 1, which of the following is true?A. The double value held in j is less than the value held inside k.B. The difference between values held in j and k is 1.*C. The double values held inside j and k are both positive.D. The double value held inside j is greater than the value held inside k.4. What is a radix as used in the method parseInt (String s, int radix) from the integer class?A. A numeric base 2 such as for binary or 16 for hexadecimal.B. The number of characters in the string that represent integers.*C. The Unicode character code to be used when parsing the string.D. The number of times the string should be repeated before being converted to an int.5. Which of the following is a static method of the integer class?A. intValue ( )B. parseInt ( )C. toString ( )*D. compareTo ( )6. Which of the following statements will cause a compiler error?A. Double a = new Double (10.6) + 3;B. Integer b = 0;*C. Double c = 0;D. int d = new Integer (7) ;7. Which of the following is not an example of autoboxing?A. Boolean a = falseB. Integer b = new integer (9);C. double x = 3.0;Double c = x;D. Character d = 2;*8. What is the result of the following code fragment?BigInteger a = new BigInteger (10);BigInteger b = new BigInteger (25);a . multiply (b);a . add (b);System.out.println (a);A. 10B. 35C. 250 *D. 2759. What is the name of the BigInteger method that will calculate the remainder of division by another BigInteger?A. modulo ( )B. modulus ( )*C. divisor ( )D. remainder ( )the ones marked in asterisks are my answers, I'm not totally sure if they're right and would like someone to double check for me Are eukaryotes multicellular or unicellular or both? If there are 24 boys and 36 girls in a room, fill out all of the possible ratios of boys togirls that could be made.There are 24 boys for every 36 girls (24:36 ratio)There are boys for every girls tryType in an equivalent ratio of boys and girls How did American business add to the decline the Mexican government? A. U.S. business interests overthrew the government in order to control prices. B. U.S. business interests supported the workers in their fight against the government. C. U.S. business interests caused unrest because of unfair economic practices. D. U.S. business interests paid Pancho Villa to attack their rivals. An introductory word or phrase should be followed by:a commaa semi-colona perioda colon Your task is to decide which dig site is most likely to produce Dimetrodon fossils. What kinds of information do you think would be most useful for making your decision? examples of rational truths 1. Who was the President that ran a campaign on not joining the war but then got elected and almost immediately joined the war? (10 Points) O Harry S. Truman Woodrow Wilson O Ulysses S. Grant wiliam Howard Taft the first number in the pattern is 32 the rule is to add 27 A student stands in a school hallway. A wall separates a classroom fromthe student. The student in the hallway cannot see inside the classroombut hears noises from within the classroom. Which of these best explainswhy the student hears the noises but cannot see into the classroom? Rachel finished a meal at a diner and received a bill for $10.99. She charged the bill along with a 15 percent gratuity to her credit card. What is the total amount she charged to her credit card? Round to the nearest cent if necessary. A.) $11.14. B.) 12.54 C.) 13.19 D.) 13.73 Which of the following choices has the most political power in Canada? Which value is a perfect square root?O 12O 24O 49O 63 widte speed rom me and distance 502A yacht sailed at a steady speed for 0.5 hours, passing a cruise ship that was traveling at 25kilometers per hour. During that time, the yacht traveled 50 kilometers. What was the yacht'sspeed?Write your answer as a whole number.kilometers per hourSubmit can anyone help with this please? 20 points for it A winter jacket cost $200. It is on sale for 30% off when you have a coupon to save another 20%. How much do you have to pay for the jacket before taxes write an informative essay on the topic of immigration. Your essay will use to research to describe the changes and challenges that today's immigrant children experience