PLEASE HELP I'LL GIVE 30 POINT! Which of the following is used by geologists to determine the relative ages in a rock sequence? Select all that apply
1. stratigraphy (rock strata)
2. fossils
3. cross-cutting relationships (geologic features)
4. radiometric dating

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

What was the land like over 500 million years ago? what was under the sea?

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