Answer:
constant = changes and control is used as the basis of comparison
Explanation:
Constant variables are variables that do not change
e.g such as the temperature ( if it's meant to be kept at a constant temp).
Control variables are meant to be kept constant to allow for a comparison and thus determine the effect of IV (independant variable) and DV ( dependant variable)
4.) mumps or Mononucleosis
Multiple alleles-<span> a type of </span>non-Mendelian inheritance pattern, <span>involves more than just the typical two </span>alleles<span> that most of the time code for a certain characteristic in a species. With multiple alleles, that means there is over two </span>phenotypes<span> available depending on the dominant or recessive alleles that are available in the trait and the </span>dominance pattern<span> the individual alleles follow when combined together.</span>
Answer:
organisms better adapted to their environment tend to reproduce and increase in number
Circulatory system is the answer
