Sayyid drew a diagram to compare the gravitational and
electromagnetic forces.
which label belongs in the area marked x?
gravitational
electromagnetic
a. is attractive only
b. acts within nucleus
c. attracts and repels
d. has an infinite range

it enhances antibody production by t cells of the adaptive immune system.

hope i'm right

explanation:

because of

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

the tricuspid valve is present between right atrium and right ventricle