During endocytosis and exocytosis, cells a. take in what they need and expel what they don't need. b. move water in and out through the cell membrane. c. actively transport molecules across the cell membrane.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

Whats one way that rocks do not follow the typical rock cycle pathway?