Answer:
Nuclear fusion
Explanation:
Nuclear fusion is a process whereby the nuclei of two smaller atoms combine to form a much larger atom, accompanied with the release of energy. This is opposed to nuclear fission where a larger atom splits into simpler and smaller atoms.
According to this question, the process of releasing energy when two stoms combine to form a larger atom is called NUCLEAR FUSION. A very common example of nuclear fusion is the combination of hydrogen atoms in the sun to produce Helium atom, with the release of heat energy.
Animals release carbon dioxide (CO2) into the atmosphere through the process of respiration.
Simple squamous epithelium
The answer is B) it is Rigid
Skin is the Largest barrier agaisnt Pathogens which include Bacteria which cause infections.
