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Fofino [41]
3 years ago
9

To test the responsiveness of the kidneys, scientists have designed an experiment tracking urine output of people during a norma

l day, while regulating the in-take of water by mouth. What would be an appropriate hypothesis for this experiment?
Biology
1 answer:
IgorLugansk [536]3 years ago
4 0

B the lower the volume of water in take the lower the volume of urine produced

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In a lab about the activity series, a solution of copper(II)chloride is placed in a test tube with zinc metal. If zinc is higher
Tcecarenko [31]

Answer:

Option D, Zinc is higher on the activity series because there is clear evidence of a reaction.

Explanation:

It is very clear that a metal which is higher in activity will replace a metal having lower activity.  

Since, Zinc has higher activity than copper, it is very sure that it in a copper chloride solution it will replace copper and produce zinc chloride solution leaving behind copper as residue.  

Residues of copper is a clear evidence of reaction  

The chemical equation for this reaction would be -

CuCl_2 + 2Zn^+ -----> 2ZnCl + Cu^{2+}

Hence, option D is correct

5 0
3 years ago
Why are the EPA's water quality standards useful?
professor190 [17]
It can help determine the quelity and safety of water. This can be a good deciding factor of choosing between tap vs bottled water. If the rating is too bad you should choose to use bottled water
4 0
3 years ago
Find the value of x.<br> 145°<br> 1330<br> 1 40°<br> 117°<br> 119°<br> xo<br> 125°
vazorg [7]

Answer:

thorntonalyssa017

02/17/2021

Mathematics

High School

answered

Step-by-step explanation:

x + 779 = 900

x = 900- 779

x = 121

plz mark my answer as brainlist.

hope this will be helpful to you.

Explanation:

3 0
3 years ago
Why does the amount of heat received by places far from the equator become less?
Ainat [17]
If the Earth were a disk with its surface perpendicular to the rays of sunlight, each point on it would receive the same amount of radiation. <span> However, the Earth is a sphere and aside from the part closest to the sun, where the rays of sunlight are perpendicular to the ground, its surface tilts with respect to the incoming rays of energy with the regions furthest away. Hope this answers the question.</span>
7 0
3 years ago
22) Phosphorus and sulfur are returned to the soil primarily by the actions of
Fudgin [204]
I believe the answer is decomposers. Does that make sense in the context of what you have learned in class? If you look up "the circle of phosphorous," you can see images that show that decomposers, like fungi and microbes break down dead animals and plants using some of their phosphorous, but what isn't used is returned to the soil. The same can be said for sulfur. Decomposers like fungi and bacteria break down dead plants and animals and return sulfur to the soil. 

I want to warn you that there is a slight possibility that I might be incorrect. I am still pretty sure I am right. The only thing that makes me question the correctness of my answer is another brainily question I saw when i was looking up this stuff. Two people had responded to that Middle schoolers question and had said the answer was producers. They didn't give any explanation for their answers. So, I am confused as to how they both got the same answer that was different from mine.  No material that I have seen regarding either the phosphorous cycle or sulfur cycle has shown plants as RETURNING the most sulfur and phosphorous into the soil. Usually, it has been depicted that producers, such as plants, UTILIZE the most phosphorous and Sulfur from the soil.
5 0
3 years ago
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