The movement of energy through an ecosystem is best described as a A. food web. B. trophic level. C. food chain. D. cycle diagram.

3. What is the difference between speed and velocity?

What happens when molten material is heated from Earth's core?

What are some ways people can stop the spread of invasive species?

Name the transportation process that uses energy to move ions against a concentration gradient

Which factor most likely caused animals and plants in india to differ greatly from species in nearby southeast asia?

Passive transport is the act of a molecule moving freely down its concentration gradient. true or false

Identify and explain three major issues that cut across psychology

Which of the following is an unsegmented acoelomate worm? a. flatworm b. annelid c. roundworm d. echinoderm

Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms? A. mechanical isolation B.

From the time of my beginning, my part was made of fibrous material called collagen, which is secreted by