Which of the following is a conceptual model that represents the flow of energy through an ecosystem? A. inheritance B. food web C. infiltration D. circulatory system

3. Which of the following are NOT types of microorganisms? a. Prions b. Viruses c. Bacteria d. Earthworms

Cells having matched pairs of chromosomes are

All the following are true of the movement of Earth's atmosphere except: a. cool air is denser than warm air so it tends to sink toward the Earth's surface. b.

Extensions from megakaryocytes that extend through blood vessel walls in red marrow are sliced off from the cells by the force of blood flow. these extensions are

Why is the equator warmer than the north and south pole

If DNA polymerase is observed to pause as it is synthesizing genetic material from a template strand, this is likely the result of: (A) DNA polymerase encountering a "bulky lesion" on the template strand.

Do all social hazards result from an individuals lifestyle choice? Explain

Some species of wasps are social. The queen starts a colony from scratch each spring. She builds a small nest, and lays and raises a group of female workers. The workers enlarge the nest while the queen continues to lay eggs.

Students at a university were split into two groups and each received a different text for a philosophy course.

What is the function of the throat in fish?