Carbohydrates, lipids, proteins, and nucleic acids
Answer is: the part of an experiment that stays the same though out the experiment is constant.
<span>Constant is a quantity that does not change.
</span>Experimental variable<span>, which is the also part of an experiment, is affected by the experiment (have change).</span>
1. the birds call is a behavioral adaptation 2. the animals body temp changing is physical. 3. the birds flying is a behavioral adaptation.
A. A law is a uniform constant of nature, where’s a theory can still be questioned and falsified