The number of organisms of a specific species in an ecosystem is known as a a) community
b) population
c) carrying capacity
d) habitat

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Describe how alleles and genes are related

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them