According to Darwin, natural selection is based on the ___found in populations.

A. acquired characters

B. variations

C. weakest members

D. similarities

What is the Phanerozoic eon? What is the Mesozoic era? When? What are dinosaurs? How do we classify them?

A caterpillar eats only plants. a robin eats the caterpillar. what is the role of the robin in this system?

What is a decomposer? A. Consumer that builds up organic material B. Consumer that breaks down dead organic material C. Consumer that produces its own food D. Consumer that breaks down non-living material

You have a container filled with pure water and semi-permeable membrane dividing it in half. If you add 10 grams of salt to the left half, the water will move to the

If decomposers were added to an energy pyramid that contains producers, primary consumers, and secondary consumers, which trophic level or levels would be affected?

What are uses of nuclear power?

What is the ultimate energy source for the producers

Which process is a form of mechanical weathering? A. Hydration B. Carbonation C. Exfoliation D. Oxidation

The nurse obtains the patient's history to identify factors that may affect drug pharmacokinetics. which patients who are on highly protein-bound drugs are likely to experience drug toxicity?

The hellenistic philosophy advocating the avoidance of both joy and pain is called