Afood provides 8 grams of fat and 300 total calories. what is the percentage of calories from fat in this product? a. 48% b. 52% c. 24% d. 30% e. 58%

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.