G four pairs of species are given, with descriptions of how they interact. Match each system of differential equations with a species pair, and indicate which species is and which is . (a) represents the population. represents the population. (b) represents the population. represents the population. (c) represents the population. represents the population. (d) represents the population. represents the population.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Which layer will become saturated first when rain falls?

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only