Cell phone use is very high by many people of all ages, a relatively recent behavior. Cell phones emit radiation in small amounts, which cells can absorb. Some recent research studies show this radiation may be causing health risks related to changes in DNA. Do you think people should be more careful with cell phone use? What are the pros and cons of having a cell phone with you at all times?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Which of these transport mechanisms moves glucose from the blood into a cell? active transport diffusion facilitated diffusion osmosis

What do we call an individual that has inherited two identical alleles for the same trait? a.homozygous b.heterozygous c.monozzygous