Which two of the following best describe why Earth has four different seasons?
d

A and B

That's what I got out of it.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg