Afish is swimming in fast-flowing, cold, and very oxygenated water. which ecosystem is this fish most likely in? a. a river b. a pond c. a coral reef d. an intertidal zone

The fluid mosaic model of the membrane proposed that membranes

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?

The structure of cells has changed significantly overtime. what concept explains the presence of mitochondria in cells?