Scientists have also used fossil evidence to determine on Earth. A) past climate
B) how many animals lived and died
C) if an asteroid struck
D) none of the above

The influenza virus cause the flu, but not other diseases. why?

In general, did the simulated mice align with your predictions from the punnett squares? yes or no?

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.