As one organism eats another, toxins can be spread through the food chain?

true or false

If a animal hibernates, it does not come out of its den or home for a long time. Explain how hibernating animals can survive this long without coming back out.

Which of the following human activities would be expected to be the biggest contributor to air pollution? a. driving b. restaurant garbage c. aerosol cans d. nuclear weapons

Question from Campbell Biology Chapter 16: 36) Studies of nucleosomes have shown that histones (except H1) exist in each nucleosome as two kinds of tetramers: one of 2 H2A molecules and 2 H2B molecules, and the other as 2 H3 and 2 H4 molecules.

Heterotrophic organisms used the process of fermentation to nourish. What is fermentation? It is a chemical process that requires oxygen. It is a chemical process in which sugar molasses is ingested.

Scientific knowledge is based on all of these excepta) rigorous testing. b) small sample sizes. c) publication and peer review. d) acceptance in the scientific community.

What is two examples or permeable rocks

Two-thirds of the Earth's surface is covered by water. The water cycle includes these water sources evaporating and returning to Earth as rain and snow. What is the driving force behind the water cycle?

What major explanation did Charles Darwin provide? A. He explained how DNA is passed on but did not have evidence of it occurring. B. The idea of speciation was first proposed by him. C.

2. A common misconception is that the visible bands on each chromosome represent individual genes, but in reality, the bands can contain hundreds of genes. Each gene is the directions to make one

Which describes a disadvantage of social behavior? Foraging could increase competition for food. Mating with more than one mate could increase reproduction rates. Members of the group may not have to do as much work to survive.