Renewable energy is energy from sources that- A. We’re once living organisms
B. will take years to deplete
C. Humans can manufacture
D. Are constantly being formed.

Which events are likely to be catastrophic to an ecosystem? select the three correct answers.a-hurricane.b-steady population growth.c-seasonal flooding.d-introducing of an aggressive invasive species.e-tsunami.

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Select the correct answer. what does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms