Which of these is a biotic factor in a beach ecosystem? O A. Seaweed
O B. Sunlight
O C. Salt
D. Sand

Atown is built on the banks of a small lake on the edge of a desert. after some time, the townspeople discover that water from the lake has become too polluted to use. describe one way that the lake may have been contaminated by the actions of the townspeople, and explain how the townspeople can remediate this problem.

The 5th term in a series of even number that begin 3x

Which volcanic eruption caused the most deaths