Okay number 1 what defines landforms 2 what determines the amount of run off . 3 how do streams form .

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

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.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.