Did you mean "atp"? if so It is less I hope this helps please mark brainliest :)
Answer:
B
Explanation:
It is important to only test one variable at a time because you need to be able to disprove or prove a problem with just one independent variable. When you have several variables in the experiment, it would be impossible to know which variable honestly caused the end result.
Answer:
they are producers and they have means to keep themselves warm
Explanation:
I took test and saw answer.
