Students are testing the james river for dissolved-oxygen levels. They test in the blue ridge mountains,at the rivers source,and in Richmond Virginia,a highly populated area. What is the independent variable in this experiment?

Answers

Answer 1

Answer: 21 holes

Explanation:

Yes

Answer 2
The oxygen levels I think

Related Questions

Ezra eats a cheese sandwich for lunch. Cheese contains a lot of protein, and bread is mostly starch. Ezra plans to play basketball later in the afternoon. He is breathing normally.

What does Ezra need from the food he ate and the air he breathes so that he can play basketball? How do Ezra’s body systems work together to get the molecules he needs into his cells? How do his cells use these molecules to release energy for his body to run?

Answers

Answer:

Ezra need glucose and protein from the food he ate and oxygen from the air he breathes so that he can happily play the basketball

Answer:

I agree that Ezra need glucose and protein from the food he ate and oxygen from the air he breathes so that he can happily play the basketball

Two students want to go on a night hike when there is a full moon In July. July Sun. Mon. Tues. Wed. Thurs. Sat. 4 S 7 9 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 If there is a third-quarter moon on July 2, what is the approximate date of the next full moon? (8.7B) O July 9 July 16 0 July 23 0 July 30 1 2​

Answers

July 23 because it takes 21 days for a third quarter moon to get to a full moon.

The approximate date of the next full moon is to be considered as the July 23.

Calculation of the approximate date of the next full moon:

Since two students want to go on a night hike so there should be full moon in July.

So if there is any third quarter moon on July 2

So here the date should be July 23 since it takes 21 days for the third quarter moon to get to a full moon.

Learn more about moon here: https://brainly.com/question/24727111

Which two substances are among the six most abundant elements in living things?


A. Calcium
B. Nitrogen
C. Helium
D. Chlorine

Answers

the answer is Nitrogen

The most common elements in living things are CHNOPS : Carbon Hydrogen Nitrogen Oxygen Phosphorus and Sulfur

Answer:

the answer is B. Nitrogen

Explanation:

The six most common elements in living things are carbon, hydrogen, oxygen, Nitrogen, phosphorus, and sulfur.

What sound does a cat make

Answers

Answer:

meowwwwwwwwwwwwwwww

Answer: Meow! LOL :D

Explanation: Have a Great Day! :)

How could you compare the anatomy of a....

1. Human to fish? What are similarities/differences?

2. Elephant to a tiger? What are similarities/differences?

3. Gorilla to a squirrel? What are similarities/differences?

Answers

Wish I knew the answer
Small big large tall tiny stuff like that i think

1.What is a female’s genotype? _________
2.What is a male’s genotype? _________

Answers

Answer:

Females - XX

Males - XY

Answer:

Female:XX

Male:XY

Explanation:

Using the definition of “genotype” that refers to a relevant section of the DNA sequence inherited by an organism, the genotype of female humans is XX, as opposed to male humans' genotype XY.

What type of element(s) would be expected to form first from a subatomic particle explosion? choices are heavy elements, iron, oxygen, and light elements!! thanks

Answers

Answer: what I can remember it’s iron because iron weighs more than oxygen

Use the interactive boundary map to look at the different types of boundaries on Earth. Which type(s) of boundaries occur on the west coast of the United States?

Convergent

Transform

Divergent

Answers

Transform is the correct answer B
Transform boundaries

It is generally acknowledged that as human beings age, it becomes more difficult for them to lose weight, or even maintain their current weight. People find they have to eat less and/or exercise more to maintain a healthy weight.

Which is the most likely explanation of why weight loss/maintenance becomes more difficult as people age?

a). As humans age, they becomes less active and use their muscles less; therefore, less chemical energy is converted to thermal energy.
b). As humans age, the process of extracting energy from the food becomes less efficient, so more food is needed to provide the same amount of energy.
c). As humans age, they become injured more often and need to increase the amount of food they eat to make repairs to body tissue.
d). As humans age, the body does not convert chemical to thermal energy, so they do no burn off any calories when exercising.

Please hurry!

Answers

Answer:D

Explanation:

Answer:  is d

Explanation:

what is an outcome variable in an experiment?
Subject; science experiment

Answers

Answer:

dependent

Explanation:

depending on what the question is asking specifically, the independent variable is the variable you change in order to get the outcome of the dependent.

variable is anything that can change or be changed. In other words, it is any factor that can be manipulated, controlled for, or measured in an experiment.

Greek philosophers such as Democritus and Aristotle had ideas about the composition of matter. For example, Democritus believed matter was made of tiny, solid spheres that he called atomos, and Aristotle thought matter was made of earth, water, fire, and air. Aristotle's idea of matter was the accepted idea for over 2,000 years until John Dalton came up with a new theory about matter based on his experimental data. Which of the following best explains why Dalton’s theory became more widely-accepted over Aristotle's theory?


Aristotle’s theory did not have enough direct evidence due to poor observational tools.


Dalton’s theory had repeated observations which were supported by extensive evidence.


Dalton’s theory was more complete because more respected scientists found the ideas possible.


Aristotle’s theory became the law of conservation of mass when he documented phase changes of matter.

Answers

Answer:

The correct answer based on what you provided would be B, or the second answer.

Explanation:

There is evidence in the text to support the answer, and people tend to believe conclusive results over just believing in something, and Dalton's theory was based on results.

The second one daltons theory was based on experimenting

During a schoolyard survey, students observe a litter of baby rabbits with brown and white offspring. Explain how it is possible for two brown furred rabbits to have a white furred offspring. Use evidence to support your answer.
help asap

Answers

Answer:

Its a recessive gene

Explanation:

It was passed down by their grandparents, or great grandparents

The two brown furred rabbits can produce white furred offspring if both parent stocks are heterogenous brown rabbits (Bb x Bb).

[tex]\frac{1}{4}[/tex] or 25% of the offspring will be white furred (bb) as shown in cross done with a Punnett Square (see attachment below for evidence).

Recall:

A recessive trait will be expressed in an offspring if two copies of the recessive genes for a trait are present in the offspring.

Let's assume the gene for brown fur is dominant over the gene for white fur.

Using B to represent gene for brown furb to present gene for white fur

Therefore, the two brown furred rabbits can produce white furred offspring if both parent stocks are heterogenous brown rabbits (Bb x Bb).

[tex]\frac{1}{4}[/tex] or 25% of the offspring will be white furred (bb) as shown in cross done with a Punnett Square (see attachment below for evidence).

Learn more here:

https://brainly.com/question/22965794

1. Fill in the Punnett Square, showing the kinds of offspring (male or female) that are possible.
2. What is the genotype ratio for male and female offspring? __________
3. Is it more likely, less likely, or equally likely to produce boys instead of girls? ________

Answers

Answer:

Explanation:

y

Which pair of objects would be most strongly attracted to each other?
A. A negativity charged particle and a neutral particle
B. Two positively charged particles
C. A positively charged particle and a negatively charged particle
D. Two negatively charged particles

Answers

answer is c! opposites attract

just a sentence and nothing else

Answers

Answer:

Kyle walked his dog before bed.

The ____ is the source of all energy in our atmosphere. a. Sun c. Moon b. water cycle d. Coriolis effect

Answers

Answer:

Sun

Explanation:

Answer:

the sun

Explanation:

no comment

telescope that gathers information in almost any weather during any time of the day?

Answers

I believe the best answer is an optical telescope.
optical telescope, hope this helps!!

8. What is the difference between a unicellular organism and a multicellular organism?

Answers

Explanation:

unicellular organism are single celled organisms and usually cab not be seen by our naked eyes. Example:yeast, microscopic algae, bacteria and more

multicellular organisms are organisms that have two or more cells. Example plants, animals

Living organisms are made up of cells. Cells are organized at different levels to form very complex living organisms like your body. Each level has a specific role or job to perform.

Which of the following lists these levels in the correct order of organization from the simplest to the most complex?

Cells, tissues, organs, organ systems, organisms


Organisms, organ systems, organs, tissues, cells


Tissues, cells, organs, organisms, organ systems


Organs, organ systems, organisms, cells, tissues

Answers

Hi! The correct answer is A. Cells, tissues, organs, organ systems, and organisms
The correct answer is A

Which group of plants lacks true roots, stems, and leaves?

A seedless vascular plants
B nonvascular plants
C nonflowering seed plants
D flowering plants
This quetion is from edgenutiy

Answers

The nonvascular plants are the group of plants that lacks true roots, stems, and leaves. The correct option is B.

What are non-vascular plants?

Plants lacking a circulatory system made up of xylem and phloem are referred to as non-vascular plants.

They may instead have more basic tissues with tailored capabilities for the internal transfer of water.

Mosses, hornworts, and liverworts are examples of nonvascular plants. They don't have leaves, stems, or roots.

Nonvascular plants require a damp environment, are low-growing, and reproduce using spores.

The primary distinction between vascular and nonvascular plants is that the former have a vascular system for the transportation of food and water, whilst the latter lack circulatory tissues.

The majority of liverworts are quite rare in the park and need to be close to water to survive. Mosses and liverworts are tiny, non-vascular, primitive plants.

Thus, the correct option is B.

For more details regarding non-vascular plants, visit:

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How many total atoms are in the following compound?

2K2CO3

Answers

Answer:

There is 3 because K2 is its own atom and it has 2 K2 and Co3 is its own and there's one

Explanation:

This is what I was taught

The South’s major crops included tobacco, rice, sugar cane and what else

Answers

Answer:

indigo (purple dye)

Explanation:

i hope this helps you! have a great day

It also included cotton

hope this helps!

1)Use the data from 9.3 to construct a line graph to show the change over time.Give the graph a title.




2)Make a claim that answers” What effect did the removal of tidal restrictions have on the number of mummichogs found upstream?”




3)What evidence was used to write your claim? Reference specific parts of the table or graph.



4)Explain your reasoning and why the evidence supports your claim. Connect the data back to what you learned about mummichog fish and their connection to salt marsh health.

Answers

Can you try using a picture next time so we can see the graphs and then we can help u (:

Which statement is not true of mitosis?

The statements are:

A There are four stages of mitosis

B It is the division of genetic material of a dividing eukaryotic cell into two parts

C it is a process that takes an average of eight minutes for any cell to complete the process

D each daughter cell receives a full set of chromosomes identical to the parent cell

Answers

answer c
explaining: it’s incorrect
It would be C, I think c is incorrect

What is the primary function of this body system?

Answers

Organ system if that’s wrong then sorry but let me know ?

The brain, together with the neurological system that connects to it, is the most important organ system in the human body, even though your heart is also a key organ.

What is the role of body system?

Blood containing oxygen is delivered to your bones via your circulatory system.

Your bones are actively creating new blood cells in the interim. Together, these mechanisms preserve internal equilibrium and stability, or “homeostasis.”

The body's action and functionality are controlled by the neurological and endocrine systems.

The respiratory, circulatory, and digestive systems team up to eliminate waste from the body while simultaneously taking in essential nutrients and substances.

Therefore, connecting and supporting is primary function of body system.

Learn more about body system here;

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Which best describes the plate tectonic theory?

A) The Earth is a big puzzle
B) Broken plates of the Earth float on the liquid mantle

Answers

The answer should be b
The answer has to be b

Please help me it’s overdue by a week

What is a boundary between two air masses of different density, moisture, or
temperature?

Answer Choices:

O Station model
O Low pressure
O Front
O High pressure

Answers

Answer:

the front

Explanation:

think of storms or rain you look for Sharp temperature changes over a relatively short distance.

Change in moisture content.

Rapid shifts in wind direction.

Pressure changes.

Clouds and precipitation patterns.

and people on the weather channel usually talk about cold or warm fronts

It would be C. Front

An astronomer wants to analyze the composition of a distant star. What is the best tool the astronomer can use?

Answers

Answer:

Spectograph

Explanation:

The most common method astronomers use to determine the composition of stars, planets and other objects is spectroscopy.

I need to summarize all of this...PLeAsE hElP mEeE!!!!!

Answers

Inherited traits are traits your born with, and acquired traits are traits are traits you get later in your life.

Explanation:

Your hair, skin color, and eye color are In hareted by your parents. If you and your mom both have brown hair and your dad has Blonde that means you have Your moms gene for hair color.  That also means your moms gene is a Domanent gene and your dads is prob. a Resesive gene. A Domanent gene over powers the Resesive.

Hope this helps :)

ok here is a challenge i'll give you a brainiest if i agree!!
Let say we forget everything people has ever said to you such as ugly, pretty, short, tall, dumb or whatever that is "describing" you. (includes: family, friends, strangers)
now tell me who you "really" are after you forget everything anyone has ever said to you.

Answers

I would have no idea who I am, heh.

Answer:

i amgonna not know who i am

Explanation:

T-T im weird

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