Which stroke is this describing? As the piston moves up the air and fuel mixture are compressed.
1. power
2. compression
3. intake
4. exhaust

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?

Approximately what portion of the foods that we eat have been genetically modified in some way? a.fewer than 10% b.about 50% c.nearly 100%