True or false, the theory of sea-floor spreading explains why rocks of the ocean floor are youngest near the mid-ocean ridge?

Which of the following protists gets nutrients mainly by absorbing molecules from other organisms through their cell walls and cell membranes? a. amoebas b. water molds c. ciliates d. slime molds

In what for do plants utilize nitrogen? why do they need nitrogen?

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite