Skin helps organisms keep their shape
For the first one, electrons travel around the nucleus in fixed energy levels with varying energies.
Second one, protons, neutrons, and electrons have a mass, but electrons have far less mass
Third one, cations and protons
Fourth, not sure.
Answer:
health compares breakfast choice between male and female
The sheer force of water hitting the banks<span> and bed of a </span>river causing<span> material to be dislodged and carried away ... An</span>overhanging cliff<span> that is found </span>on<span> the outer bend of a meander that is created due to lateral erosion of the </span>bank river<span>.</span>
Answer: Thru Photosynthesis
Explanation: This is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.