Answer:
See the answer below
Explanation:
<em>It is important to control the variables so as to isolate the dependent and the independent variables from other variables. Since the value of the dependent variable varies with the independent variable, not isolating the variables would lead to interference of multiple variables, and hence, knowing which variable produces a particular effect will be difficult. In other words, the primary aim of experiments would not be achievable without isolating the dependent and the independent variables.</em>
Answer:
that aren't sex chromosomes ( dont know which one because there are not any answer choices)
Explanation:
Macrophages are specialised cells involved in the detection, phagocytosis and destruction of bacteria and other harmful organisms. In addition, they can also present antigens to T cells and initiate inflammation by releasing molecules (known as cytokines) that activate other cells.
Digestive enzymes secreted by the pancreas are:
trypsin (a protease)
lipase
maltase
Hormones secreted by the pancreas are:
insuline
glucagon
The two species probably had a common ancestor, but split and changed from evolution.