What's the difference between the abyssal plain and ocean trench

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?

Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days. true or false

Mendel used over 28,000 pea plants in his experiment. how does this large sample size make his results more reliable? (i'm not sure about this one)