Riley is 3 years older than his sister. The sum of their ages if s represents Riley's sister's age is shown as

A. 3s

B. b s + 3

C. 2 (s + 3)

D. 2s + 3

Where do the light-dependent reactions take place

What is the difference between ice and snow.

By what process do streams and rivers move material? A. Weathering B. erosion C. mass wasting D. infiltration

Similar cells that are grouped together and perform a common function are called

What role do restriction enzymes play in the analysis of eDNA? A. They sort different sized DNA fragments into a banding pattern. B. They multiply small amounts of DNA into larger samples. C. They purify samples of DNA obtained from the environment.

Many fault lines are obvious at the surface. How can the epicenter of an earthquake be located miles away from the fault line?

The harmless scarlet kingsnake has scales in a coloration and pattern resembling the scales of the dangerous coral snake. The scarlet kingsnake is using to avoid predation

Charles Darwin came up with the system we use to name and classify organisms. True False

8. Cystic fibrosis is caused by a recessive allele. The frequency of this allele is 0.1 in a population of 2,500. a. What is the frequency of the dominant allele? b. How many people in this population will have cystic fibrosis? c.

Which part of the brain controls conscious activities, memory, language and the sense?