Which of the following can result in genetic mutations? (1) cigarette smoke (2) chemi- cals in processed meats (3) too much sunlight (4) certain viruses. 1. 1, 2, 3, and 4

2. 2 and 4

3. 1 and 3

4. 1 only

Energy derived from hot rocks and fluids beneath the earth’s surface is

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.