Following Description
Regulates entry and exit of materials into and out of the cell?
Controls all the cell's activities?
Contains cell sap?
The site where most of the cell's chemical reactions take
place?

Liquid water turns into water vapor at which step in the water cycle? a. precipitation o b. water run off c. evaporation d. condensation

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?

Select the word from the list that best fits the definition apparent movement of a star used to measure its distance from earth