Answer:
Radiometric dating, often called radioactive dating, is a technique used to determine the age of materials such as rocks.
Explanation: It is based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.
what makes the red blood cell special, why is it special, how is it different than other cells, what is its primary function. (Minimum 5 sentences)
What two groups are represented in archaeopteryx?
Please help
Answer:
The species of Archaeopteryx is lithographica and siemensii
Explanation:
Fun fact: Archaeopteryx is a combination of two ancient Greek words: archaīos, meaning "ancient," and ptéryx, meaning "feather" or "wing."
Archaeopteryx has long been thought to be the earliest known bird and a transitional form between birds and reptiles.
What are Archaeopteryx?Many consider Archaeopteryx, which lived approximately 150 million years ago, to be the first bird.
It is actually a transitional species between the birds we see in our backyards and predatory dinosaurs like Deinonychus.
Many features of Archaeopteryx, such as teeth and a long tail, indicate that it evolved from comparatively tiny carnivorous dinosaurs.
It also has a wishbone, a breastbone, hollow thin-walled bones, air sacs in the backbones, and feathers, as do nonavian coelurosaurian relatives of birds.
Archaeopteryx was thought to be the first recognized bird and a transitional form between birds and reptiles for a long time.
Thus, the two groups that are represented in archaeopteryx are birds and reptiles.
For more details regarding archaeopteryx, visit:
https://brainly.com/question/15828307
#SPJ2
Please help me
Important Ions move from low to high concentration while using a membrane protein. Which of the following is true? Question 5 options:
A. It's moving down the concentration gradient.
B. Energy is needed to make this happen
C. It's facilitated diffusion.
D. It's osmosis.
Answer:
A) it is moving down the concentration gradient
Explanation:
Brownian motion will cause the molecules (or ions) to spread/diffuse from where they are more concentrated to where they are less concentrated until they are equally distributed in that space (Figure). When molecules move in this way, they are said to move down their concentration gradient.
help please ! TYSM!!!
Answer:
Most likely A
Explanation:
As the height (m) increases, the weight (kg) also tends to increase.
Yellowstone National Park has 124 wolves living in it.
Answer:
[tex]\huge\boxed{B}[/tex]
Explanation:
You basically have to divide 124 and 3472.
124 ÷ 3472 = 0.0357
0.0357 wolves/mi^2
Therefore your answer would be letter b.
Good luck!~
Describe the natural process that creates a human clone.
Answer: Natural cloning also occurs in animal organisms during processes such as budding (offspring grows out of the body of the parent), fragmentation (the body of the parent breaks into distinct pieces, each of which can produce an offspring), and parthenogenesis. In humans and other mammals, the formation of identical twins is a type of natural cloning.
Explanation:
hope this help from tae lol
The diagrams below illustrate models of various chemical compounds..
How do the test variables (independent variables) and outcome variables (dependent variables) in an experiment compare?
A. The outcome variable (dependent variable) controls the test variable (independent variable).
B. The test variable (independent variable) controls the outcome variable (dependent variable).
C. The test variable (independent variable) and outcome variable (dependent variable) have no affect on each other.
D. The test variables (independent variables) and outcome variables (dependent variables) are the same things.
Answer: B
Explanation:
The independent variable is the experimenter so it changes and controls the dependent variable because it is assumed that the dependent variable gets a direcr effect from the independent variable.
Answer: should be B
Explanation:
Compare and contrast predators and prey please
Answer:
A predator is an organism that eats another organism. The prey is the organism which the predator eats.
Some examples of predator and prey are lion and zebra, bear and fish, and fox and rabbit.
Which event is caused by gravity?
A. Water enters an aquifer through infiltration.
B. Water exits a person through perspiration.
C. Water changes from ice to liquid water through melting.
D. Water moves from the atmosphere to a glass surface through
condensation
Answer:
A
Explanation:
A
Answer:
A
Explanation: took the test
A student measures the mass of an 8 cm 3block of brown sugar to be 12.9 g. What is the density of the brown sugar?
Answer:
I hope this help's
Explanation:
which of the following is NOT made of proteins?
A. muscle
B. polypeptide chains
C. hydrogen
D. ligaments
Answer:
c. Hydrogen
Explanation:
Do I really need to explain...
PLEASE HELP ME!!!!! WILL MARK THE BRAINLIEST!!!!
Question: Describe the difference between positive feedback and negative feedback in your own words.
how to do this question
i)iodine
ii)A,B,D= no colour change and c is turned black
B and D will have no colour changes they don't have starch
What are some positive and negotiate things about the human reproductive system? (3 reasons for each please)
Answer:
Positive:
- offspring are all different, therefore more genetic variations that will increase survival.
- diversity
Negative:
- two partners are involved
- undesirable traits could be inherited by the offspring
I hope this helps I’m sorry I couldn’t think of three for each
Is using fossil fuels in generating electricity better or using renewable energy? why?
Answer:
Explanation:
Using renewable energy will always be better than fossil fuels.
This is because fossil fuels need a very long time to renew themselves. And we will run out of them long before they can renew themselves. Besides this, there is a more concerning and very alarming issue with using fossil fuels instead of other energy sources. Global warming and environmental destruction is a very big problem for us in the 21st century. The air is more and more polluted. Temperatures are rising and oceans are rising with them. We will lose the ability to grow food and raise animals in the future if we continue like this.
If an animal is sold at terminal auction The exhibitor may purchase the animal back to show at a later life show? True or false
Answer:
false
Explanation:
all of the following will take place during the first trimester except?
a. heartbeat can be detected
b. external sex organs show the sex of the baby
c. lenses of the eye appear
d. wake and sleep cycles become regular
Answer:
b
Explanation:
Which term best describes a person's state of well-being? a Disease-free b Component c Literacy .d Health
Answer:
Health
Explanation:
Because you are well when you are in good health.
What would most likely happen to a person who is not getting enough essential amino acids in his or her diet?
The body would synthesize the amino acids.
Muscle growth and repair would be limited.
Stored protein would break down.
The formation of proteins would increase.
Answer:
Muscle growth and repair would be limited
Explanation:
plz give me brainiest
Essential amino acids are the vital nutrients required by the body. The deficiency of the amino acids in the diet will limit the growth and repair of the muscles. Thus, option B is correct.
What are the essential amino acids?Essential amino acids are the amino acids that are not synthesized by the body and instead are taken from external sources in the diet. Some of the essential amino acids include histidine, lysine, valine, phenylalanine, etc.
The essential amino acids improve the musculoskeletal and the immune system along with stimulating the growth and production of hormones.
If the diet lacks the essential amino acids then the repair mechanism and the growth of the body will be limited as they are not synthesized by the body.
Therefore, the absence of essential amino acids limits muscular growth and repair.
Learn more about essential amino acids here:
https://brainly.com/question/17101933
#SPJ2
Which accurately describes the relationship between nutrients and life-forms in an estuary?
O A. As nutrients increase, the number of life-forms increases.
0
B. As nutrients decrease, the number of life-forms increases.
O
C. As nutrients increase, the number of life-forms stays the same.
D. As nutrients decrease, the number of life-forms stays the same.
Answer:
O A. As nutrients increase, the number of life-forms increases.
Explanation:
common sense
The statement that best describes the relationship between nutrients and life forms in an estuary is as follows:
As nutrients increase, the number of life-forms increases.Thus, the correct option for this question is A.
What do you mean by Estuary?An Estuary may be defined as a type of ecotone that signifies the transitional zone of two different ecosystems which include the freshwater river ecosystem and the marine water ocean ecosystem.
In this ecotone, the characteristics of both ecosystems are present. Hence, it has a high biodiversity as compared to both ecosystems individually. This region shows maximum diversity and is thus known as the edge effect.
This illustrates that when nutrients in the ecotone increase, the number of life forms i.e. biodiversity increases.
Therefore, the correct option for this question is A.
To learn more about Estuary, refer to the link:
https://brainly.com/question/463545
#SPJ2
Flow of Endosymbiotic Theory
Answer:
The Endosymbiotic theory is the theory that “Cells evolved from previous ancient cells.”
why is the chemical reaction between nitric acid and sodium hydroxide called the neutralization reaction?
what are the different ways of storing tools and equipment safe
answer is included in the picture below.
Answer:
Step 1
Delegate a portion of your garage, shed or basement closet as a place to store tools. Clean out the junk and clutter and make a space only for tools. Figure out how much space is needed for the amount of tools you have. Sweep away cobwebs, dirt and other foreign matter. Get a shelving unit and store chemicals, liquids and paint substances out of the reach of children and pets.
Step 2
Find the parts. Locate cords, bits, nails and screws and organize them. Allocate plastic bins to store smaller household tools. If you have a large tool collection, organize by type for easy location. Keep the parts for each specific tool close by.
Step 3
Clean out dirt and debris from tools. Oil power tools to lubricate moving parts. Repair loose handles and clean out oil or other fluids used to power the tool. Sharpen blades and replace worn out parts.
Step 4
Set up racks. Mount commercially available racks along the wall of your garage or storage area to hang garden tools, cords and other equipment. Screw racks into the wall with screws recommended by the manufacturer and a power drill. Wind long cords in a loop and hang from rack. Place tools on racks by the handle. Draw the outline of the tool with a permanent marker to identify its place, or use labels to mark the location.
Step 5
Create a library. For tools and appliances that have various functions, designate a library area or bin within the storage space for user manuals and warranty sheets. Store the booklets alphabetically and in a dry area. Type up a sheet listing all of the books to create simple table of contents.
Which statement best compares the amount of fossil fuels formed each year to the amount used each year?
The amount of fossil fuels formed is exactly the same as the amount used.
The amount of fossil fuels formed is approximately the same as the amount used.
The amount of fossil fuels formed is much less than the amount used.
The amount of fossil fuels formed is greater than the amount used.
Answer: C
Explanation:
Hope this helps
Answer:
c
Explanation:
give them brainliest but i just took the test
and it was right
Population density is calculated by
Answer:
C.
Explanation:
To calculate the population density, you will divide the population by the size of the area. Thus, Population Density = Number of People/Land Area. The unit of land area should be square miles or square kilometers. You can use square feet or meters if you are finding the density of a smallish space.
Answer:
a on edge
Explanation:
dont trust c i got it 100%
Which type of rock has a coarse texture due to slow cooling in magma chambers?
A.extrusive
B.intrusive
C.metamorphic
D.sedimentary
Answer: Intrusive
Explanation:
If magma cools slowly, deep within the crust, the resulting rock is called intrusive or plutonic. The slow cooling process allows crystals to grow large, giving intrusive igneous rock a coarse-grained or phaneritic texture.
Hope this helps!! :D
Answer:
intrusive
Explanation:
Intrusive igneous rocks form at some depth within the crust due to slow cooling of magma, resulting in formation of large crystals. Individual crystals can be seen with the naked eye. These rocks are termed texturally as coarsely crystalline or phaneritic.
Which of the following is true about self-disclosure?
It involves sharing secrets and gossip about friends and acquaintances.
It mostly involves story telling.
It is a key element in unhealthy communication.
It involves sharing feelings and information as a means of getting to know a
person
Answer:
Explanation:
it involves sharing feelings and information as a means of getting to know a person
HELP SUPER EASY IM SO DUMB ASAP ASAP
The table shows the commonly eaten foods of some groups of organisms.
Commonly Eaten Foods List
Group Commonly Eaten Foods
A owls, raccoons, salmon
B birds, fruits, nuts, blossoms
C branches, barks, twigs, acorns
D vegetables, meat, grains
Which groups contain both primary and secondary consumers?
1.) A and B
2.) B and C
3.) C and D
4.) B and D
Answer:
B and D
Explanation:
Answer: B and D
Explanation:
I took the test
its biology, help please :)
Answer:
phosphate molecules
fats (I think)
two
Where on Earth can you find collision zones?
Answer:
You can find collision zones on the edge of the Pacific Ocean offshore Washington, Canada, Alaska, Russa, Japan, and Indonisa.
Explanation: