The Cambrian explosion is significant because this is when the first soft tissued organism evolved. (True or False)

What is the primary goal of human communities?

Are the earth's ocean floor and continents the same age geologically? why or why not?

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