Which is a homogenous mixture? 1. ceasar salad

2. pre-cooked pizza

3. coffee in a cup

4. different color beads in a bowl

What layer of the atmosphere is directly above the troposphere?

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory