A magnifying glass is an example of a simple microscope. The correct answer is will be D, simple microscope.
The independent variable in the hypothesis of an observed increased in sea turtle sickness once an increase in red tide can be seen would be the increase of red tide.
The reason for this is that red tide increases or decreases will happen independently of the amount of sea turtle sickness - therefore increasing sea turtle sickness will be dependent on the first variable. (independent one).
Cellular respiration takes place in the mitochondria
A. animal can fly; AA. animal can't fly. That should be the correct answer. I hope that this helps you!