Which of the following is a condition for a spring tide to occur? the sun, moon, and earth are all aligned. strong winds blow from the sea towards land. strong winds blow from the land towards sea. the sun and moon are at right angles to one another relative to earth.

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

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.