How long do we think that living things have existed on earth

The person who also proposed a mechanism for evolution similar to natural selection was

Amalia has the flu, a communicable disease that causes a cough and a runny nose. Which best describes how she likely got it? She does not exercise. She has a poor diet. She touched the doorknob in a classroom. She inherited it from her parents.

Which strategy can scientists use to learn about Earth's deepest layers? A) recreate high-pressure conditions in a laboratory B) use mining technology to drill as deep as possible C) test how minerals change under low-temperature conditions D)

Three characteristics or questions that can be used to classify governments

What are the main components of an atom?

What is the mechanism that creates the gradient in chemiosmosis

Species rarely grow exponentially, but do occasionally. Under which of the following conditions is this likely to happen? A. An abundance of available resources B. A lack of other species competing for resources C. A lack of natural predators D.

If penicillin is an antibiotic that inhibits enzymes from catalyzing the synthesis of peptidoglycan, than which prokaryotes should be most vulnerable to inhibition by penicillin?

A woman makes a legitimate claim for an automobile accident only to find that her agent has disappeared with her money. Which type of fraud was committed? A. Insurance fraud B. real estate fraud C. confidence game D. mail fraud

Explain why photosynthesis considered to be an anabolic, endergonic process.