What three pollutants react in the presence of sunlight to produce ozone?

Which of these is a sedimentary rock a.) gneiss b.) granite c.) sandstone

In which structure would you find a nucleus

What are the main organs of the muscular system

3) Amphibians hatch out of their eggs with: A lungs and develop gills later. B lungs and keep them their whole lives. C gills and develop lungs later. D All of the above.

4. All of the following are types of symbiotic relationships except for

Why is it important for your heart to keep oxygen rich blood separate from oxygen poor blood?

In a perfect world, reciprocal classes would be equally represented since they result from the same meiotic event. It is likely that your data suggests the parental classes are NOT equal.

4. Which process does the plant need energy to perform? A. Pulling nutrients into the root hairs B. Absorbing water into the root hairs C. Release of oxygen into the atmosphere D. Transpiration of water

What would happen in an ecosystem without primary consumers

Definition: These are parents, parents of parents,