Answer:
D
Explanation:
the circulatory absorbs nutrients and carries the chemical to signal through endocrine to control the speed of digestion.
The variables are defined as the factors in an experiment, which are liable to change. The variable can be dependent or independent. The Independent variable is a variable, which is unaffected by the changes in the other variables.
In this case, the brand of the food Shara feeds to the rats is independent factor, but it is changes in the system, so, it is an independent variable.
The effect on the weight of the rat is dependent on the brand of food they are consuming. So, the weight of rats is dependent variable.
The only trait that I know that those birds and a squirrel have in common in that they both love birdseed.
Answer:
Plasma and Platelets
Explanation:
These are the two main components that make up blood.
<h3 /><h3>hope this helps</h3>