Letter A, to take proteins out of the cell.
Living components in a river ecosystem would include all plants, all animals, all microorganisms. Every fish species, every arthropod species, every reptile and amphibian species, all the birds, etc.
They are going to stop or divide into two cells
A testable question is something you need data for, ex: if i bounce a bouncy ball from larger heights, how high will it fly? it can't be just a regular yes or no question
weathering away or change the appearance or texture of (something) by long exposure to the air.
erosion the process of eroding or being eroded by wind, water, or other natural agents.
deposition the action of deposing someone, especially a monarch.