Over the course of Earth's history, many species have evolved. However, many species have also become extinct.

Carol is studying mitosis in her biology class. During a biology lab, she is given information about an unknown organism. What might be the best way to test to see that the organism has undergone mitosis?

True or false: The central nervous system allows us to sense the environment

Individual iv-3 is born as a male affected with condition b but not condition a. his parents are bred again, and an ultrasound shows that the fetus is another male. the relevant portion of the pedigree is shown below.

Which type of cells tend to be multicellular; prokaryotes, eukaryotes, or both?

Mars is tilted on its axis. Which is a result of this tilt? A. Solar eclipses occur frequently on Mars. B. Mars has a short rotational period. C. There are seasons on Mars. D. Mars is always hot.

Which of the following is evidence that Wegner used to support his theory of continental drift? core samples unusual fit of Africa and South America radioactive dating unusual fit of North America and Europe

A horticulturist wants a plant that produces flowers with a certain size, color, and fragrance, but is not aware of any one plant having all of these traits. The quickest way she could achieve her goal would be to apply the process of ... ?

What is one way scientists are able to study operons in organisms?

A client with gastric cancer is having a resection. what is the nursing management priority for this client?

Charles Darwin was influenced by Charles Lyell, who proposed that geological processes had reshaped Earth over long periods of time. Which unexpected finding during Darwin's voyage supported Lyell's ideas?