In an ocean ecosystem, which is necessary to begin a food web?

phytoplankton production

nutrient-rich currents

the sandy and rocky base of the ocean

What would happen if the krill were removed from the food web

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.

What substance acts to prevent sudden ph changes in bodily fluids?