Bill is trying to plan a meal to meet specific nutritional goals. he wants to prepare a meal containing rice, tofu, and peanuts that will provide 350 grams of carbohydrates, 311 grams of fat, and 168 grams of protein. he knows that each cup of rice provides 42 grams of carbohydrates, 0 grams of fat, and 1 grams of protein. each cup of tofu provides 4 grams of carbohydrates, 11 grams of fat, and 23 grams of protein. finally, each cup of peanuts provides 34 grams of carbohydrates, 75 grams of fat, and 35 grams of protein. how many cups of rice, tofu, and peanuts should he eat?

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Variety of living organisms; includes genetic, species, and ecological types.