A. <span>A flatworm doesn't have a coelom
Flatworms and other invertebrates belong to a specific group called </span><span>acoelomate, wherein they lack a coelom and has an internal cavity which serves as their digestive cavity.</span>
The glands located besides the thyroid are the Parathyroid gland.
The answer is E. Arctic temperatures are increasing; the arctic fox is hibernating for longer periods of time.
Since the temperatures are increasing, Winter becomes longer, giving organisms a longer time to hibernate. Hope I helped :)
Between the 6th and 21st days of the menstrual cycle