There are tiny pores in a sponge wall. These allow for increased surface area for nutrient acquisition within the sponge.
thyroid gland!
protein.
what the hell is this....?
a double bond
Valves
lipid bilayer
complementary pairing of nitrogenous bases
id like to know as well
The arch. (Domes are modified arches)
The Black Hills are on the USGS map as an uplift.
A double bond. 7°
It is increased in the blood of coffee drinkers.