Why would there be a concern if we lost our rain forest?
a. rain forest is beautiful
b. rain forests contain a large amount of biodiversity
c. rain forest produces a lot of rain
d. rain forest produces a large amount of food resource

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

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.