Why is there the same amount of water on the earth now as there was a million years ago

Explain how and why scientists classify

Tissue, cell, organism, organ put in order from least to the most complex

A group of students decide to repeat the hershey and chase experiment with modifications. they decide to radioactively label the nitrogen in the dna, instead of the phosphate.

When you are finished running the bases you are sweating and you feel thirsty what body systems are interacting in this case

A particular species is collected and is described as "dark red-brown". How could we tell if this alga is a member of the Rhodophyta or of the Phaeophyta?

Be first to answer and will get brainliest and 10 pts Summarize the two stages of cellular respiration. Be sure to explain where in the cell each stage occurs. the two stages are cytoplasm and mitochondrion

What do we call an individual that has one dominant and one recessive allele for a trait?

Which is not part of the circulatory system A. heart B. air passageway C. blood D. blood vessels

Briefly explain the four steps of respiration (of the human body).

Researchers are studying the way plants move in response to stimuli. Which scenario could be used to test phototropism? A) Two sets of plants could be placed in a dark room and the growth monitored.