A. because the hormone secreted is parathormone which regulates the calcium in the blood.
pls mark as brainliest
ATP( adenosine triphosphate )
Hydrogen atoms are compressed
together by the enormous gravitational force
of the sun, causing them to fuse int a helium atom (which is heavier than
hydrogen), subatomic particles and enormous
release of atomic energy. The attached
picture shows the sequence of the main reaction
at the core of the sun.
A microscope is to see smaller things that you can’t see and it is a really good tool.