Cartilaginous fish do not contain any bones - their skeleton is made up of cartilage.
<span>aerobic respiration requires oxygen.</span>
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>
Answer:
individual organisms of the same species living in the same geographic location at the same time makes up a population.
Explanation:
This process is called mitosis
