What is a source of genetic variation?

A adaptation

B mutation

C respiration

D transpiration

Do fat cells function as an endocrine gland?

Using environmental resources in a way that does not cause long-term environmental harm is like A. spending only as much money as you earn. B. borrowing money that you cannot pay back for a long time. C. printing more money when you need it. D.

Data Set I: 190, 315, 198, 194, 200, 195, 540, 201, 197, 193 ("correct" value = 195)

How much of a plants mass is typically found underground?

The stroma is the central location of light-independent reactions

In what ways are index fossils and layers of volcanic ash found in ice cores similar?

The percentage of silt in silty clay loam is what? a. 60% to 70% b. 80% to 90% c. 90% to 100% d. 10% to 20%

Which of the following would cause an error in DNA replication? A. DNA ligase taking apart chunks of DNA B. Helicase making a replication fork C. DNA polymerase pairing new Cs with Gs D. DNA polymerase checking the DNA

Which of the following about Dalton's theory of matter is true? A Atoms of the same element have the same mass. B Compounds formed from two elements will not always have the same proportions. C Atoms cannot be divided into smaller parts.

What would cause a particular polygenic trait, like tall stature in humans, to become more frequent in a population over time?