Why is it necessary to conserve nonrenewable energy sources? A. They can be exhausted.
B. They can be easily extracted.
C. They are the only resources of energy on Earth.
D. They are energy sources with the least amount of emissions.

What is the chance of two parents with blood types ab and o producing an offspring with blood type o a.0% b.25% c.75% d.50%

Where can you find prokaryotic and eukaryotic cells?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d