1.) How do algae blooms destroy aquatic life? by giving off toxins that kill life

by raising the water temperature

by getting into municipal water supplies

decomposition of algae depletes oxygen needed by organisms

2.) What, besides temperature can make ocean water significantly denser

pollutants

oxygen

salinity

pressure

3.) Which area best describes a continental slope?

75 mile shallow flat area just off coastlines.

thick deposits of sediments carried out from land.

area of land dropping steeply towards deep ocean currents

the surf area along coastlines