Which events are likely to be catastrophic to an ecosystem? Select the three correct answers.
A. Introduction of a species that reproduces quickly
B. Volcanic eruption
C. Average annual snow melt
D. Tornado
E. Change in leaf color in the fall

What element does susan b. anthony include in this passage to strengthen her argument?

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

If your blood becomes too concentrated with iona, what will happen to the red blood cells