There is only one pathway by which rocks move through the rock cycle.
a. true
b. false

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

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

Light sensitivity in euglena is provided by the