Answer:
efends the body from microorganisms that could cause it harm or even death. one of the additional functions of the immune system. helps maintain homeostasis by removing old and or damaged cells from the body. complex and broad range of defensive mechanisms that the human body uses to combat infections and diseases.
Explanation:
Answer:
The sun and the earth?
Explanation:
I'm pretty sure that's right, since earth orbits the sun.
Answer:
Covalent bonds
Explanation:
The bonds between the atoms that make up water molecules are called covalent bonds.
They replace the lost ions by active uptake through active transport
of ions from the surrounding waters. This is exhibited in freshwater fishes that
actively take in these ions through the gills. Most of the ions involved in osmoregulation in freshwater are those of Na+ and Cl-.
Unicellular organism ...................................................................................................
