Complex 15. The total amount of living tissue at each tropi
level in an ecosystem can be shown in a(n)
a. energy pyramid
c. biomass pyrami
b. pyramid of numbers. d. biogeochemicals cycle

Which of the following claims does the author support the least

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.

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas