An area of a mountain has rocks with small cracks between them in the winter water flows into the cracks and freezes the expansion of water when ice forms causes the rocks to break down into smaller pieces is this and example of weathering or is it an example of erosion? how do you know?

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

Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.