What system do scientists use to keep track of their studies?

A number pyramid is a graphic that shows the number of species in a geographic area a graphic that shows how diverse the species in an area are a graphic that shows the number of organisms in each trophic level a graphic that shows only the

How is an ecological footprint determined? a. An ecological footprint is determined by measuring the average amount of land and water that a person in a region uses. b.

Describe how sounds of different frequency are differentiated in the cochlea

Cystic fibrosis is a gentic disorder. It is a reccesive trait that ia determined by two alleles. Suppose two parents carry qt least one recessive allele, but neither of them has cystic fibrosis

1. What is the end product of replication?

Why do clouds tend to form around 3:00 P. M. and 6:00 A. M.?

How does darwin's theory of evolution by natural selection explain why some organisms become extinct?

Definition of control group

What insights did Darwin's voyage provide?

Which fossil would look most like an ancient organism? * trace cast mold?