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denis23 [38]
3 years ago
9

Which statement best deschbes the variables in a controlled experiment?

Biology
2 answers:
Bezzdna [24]3 years ago
7 0

Answer:

The independent variable is allowed to change and the dependent variable is held constant to see what other conditions

Explanation:

the dependent variable is what is being tested therefore it is what remains constant unlike the independent variable.

Hope this helps. let me know if im wrong.

kodGreya [7K]3 years ago
3 0

Answer:

A) The independent variable is changed to see its effect on the dependent variable while all other conditions are unchanged.

Explanation:

i took the test review and it showed i got the wrong answer (the wrong answer was The independent variable is allowed to change, and the dependent variable is held constant to see what other conditions show a relationship. so DON'T PICK THAT ONE)

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Which model shows more diversity? <br><br> A. Food chain<br> B. Food web
Rudiy27

Answer: A food web.

Explanation:

A food web has more diversity because a food chain only shows what each animal eats. A food web,however, shows everything you need to know and more.

5 0
3 years ago
Read 2 more answers
Which structure is found in the cytoplasm of a prokaryotic cell
SVEN [57.7K]
The answer would be..... ribosomes!
8 0
4 years ago
What is the function of nucleus in plant and animal cell​
Ne4ueva [31]

Answer:

The nucleus tells other parts of the cell what to do

Explanation:

5 0
3 years ago
at over 5 million degrees celsius the temperature of the sun core is high enough for nuclear to occur
Paraphin [41]

Answer:

Yes (but not how you think)

Explanation:

I'm assuming that you mean if nuclear fusion, where two atoms (in this case mostly hydrogen) fuse into one heavier atom, and release a lot of energy.

However, fusion happens when there is a tremendous amount of pressure or heat. This is found in the core

The 5 million degrees is found on the surface of the sun, but at the core, it is at 15 million degrees.

In addition, the pressure is so extreme that if forces atoms to become one, despite the fact they don't like being together (try finding 2 strong magnets and hold them so that they try to repel each other and try and make them touch, it's hard! Now imagine having to put a million of times the amount of strength!)

So, the sun is capable of nuclear fusion, but at the core, where it is 15 million degrees!

(fun fact: scientists are trying to build "mini-suns" called Fusion reactors to try and harvest the power of the sun!)

3 0
2 years ago
Choose all the answers that apply
AVprozaik [17]

Answer:

The stratosphere

contains the ozone layer ,

is used by airplanes,

has strong, steady winds , and

increases in temperature as altitude increases .

Explanation:

The stratosphere is the atmospheric layer between 10 km and 50 km above the Earth's surface.

It includes the ozone layer, which is at an altitude of about 20 km.

It has strong, steady winds that can reach as high as 220 km/h.

Passenger aircraft generally fly in the lower levels of the stratosphere, at altitudes of about 10 km to 12 km.

Temperatures increase with altitude, from -50 °C at 10 km to -3 °C at 50 km.

A is wrong. The mesosphere (altitude 50 km to 85 km) is the coldest of the atmospheric layers, with temperatures as low as -90 °C at 85 km.

7 0
3 years ago
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