An ecosystem with more biodiversity is more likely to survive disturbances and climate changes. Why is this so? First consider genetic variation and natural selection, and then apply your ideas to a community with little genetic variation but much species richness

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?