Lysis is best described as: A. The balance of concentration inside and outside of the cell.
B. When a cell takes in too much water from Osmosis, swells, and bursts.
C. When a cell loses too much water from Osmosis, and shrinks.
D. The production of energy in the cell.

I guess B because the term is used to talk about the time cell bursts to release DNA, RNA or other things.

c. heat from the poles back down towards the equator.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.