What are some positive effects of a rapid change to an ecosystem during hurricane Katrina PLS HELP

The increase of pollutants from in mexico has raised concerns about garage to health and the environment

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.

On nights when we see the new moon phase, what side of the moon are we seeing?