The heart and arteries are key structures in which system?

A.

digestive system

B.

nervous system

C.

respiratory system

D.

circulatory system

In the cladogram, which trait separates the salmon from the salamander? A) Lungs B) Claws or nails C) Opposable thumbs D) Fur, mammary glands

You are a part of which sphere?

You hear on the news that a volcano erupted in the Pacific Northwest. You did not hear all the details, but the reporter mentioned it was one of the most explosive eruptions in the history of the United States.

How do trees interact with other organisms? a. They provide other organisms with food. b. They receive shelter from other organisms. c. They obtain food from other organisms. d. All of the above

Which correctly describes crossing over? A) the process whereby nonsister chromatids exchange genetic material B) the process whereby homologous chromosomes are pulled to opposite poles of the cell C) the process whereby sister chromatids are pulled

Human albinism is an autosomal recessive trait. Suppose that you find a village in the Andes where 1/4 of the population is albino.

What type of wave carries more energy radio waves or visible light?

What trophic level in a sentence?

Bacteria are organisms that reproduce asexually how is this better for them them reproducing sexually

Part A What is a telomere? What is a telomere? the mechanism that holds two sister chromatids together the ends of linear chromosomes the site of origin of DNA replication DNA replication during telophase