Complete the sentence:

loss of biodiversity
a.
causes no change in an ecosystem.
b.
strengthens an ecosystem.
c.
weakens an ecosystem.
d.
increases the variety of species in an ecosystem.

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.

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Which of the following is the function of the nociceptors? a. detecting odors in the nose b. detecting painful stimuli c. detecting central body temperature d. detecting touch and pressure