The energy input into an ecosystem can come from

a. sunlight

b. chemical compounds

C. soil

d. A and B

If the producers had 3000 calories available how many calories would each of the above levels receive from eating the level below?

What are trace fossils?

What two things about the biosphere make it special?

What is the difference between topsoil and clay?

What does neurologist do?

An infusion of mannitol would be prescribed to treat a. encephalopathy. b. peritonitis. c. cerebral edema. d. varices.

Which is a difference between animal populations in primary succession and secondary succession? A. Animals can be present during the start of secondary succession, but they are never present during the start of primary succession. B.

What are two examples of a chef making a physical change to food and how these examples demonstrate a physical change?

What do you think would happen if you added a large volume of fresh water to the roots of the plant? answer in terms of osmosis and salt and water concentration. Would water move into the plant, out of the plant, or stay where it is? explain why.

The organ that provides mechanical protection and nutritional support for the developing embryo is the select one: a. vagina. b. uterus. c. cervix. d. uterine tube.