Vain are the transportation system through the body
Answer:
A. An area with low air pressure
Explanation:
The red "L" symbol is used to mark an area with a low pressure air system. A low air pressure system would cause thunderstorms, but the "L" does not mean that the area marked would cause a tornado.
Option A should be the correct answer.
Answer:
18 chromosomes I guess verify
It is called a sister chromatid, not a polar body.
Hormones are a group of chemicals released by exocrine glands

These hormones are directly secreted into bloodstream from where they reach the site.