If contact between rocks over long periods of time causes rocks to be subrounded, then contact between rocks over long periods of time causes rocks to be what? Answer choices: - coiled - homogenous - inactive - subrounded - dormant state - barrel-shaped - erosion - threatened
subrounded

If vesicle transport requires energy for movement of substances against a chemical gradient, then why does vesicle transport need energy? Answer choices: - it helps plants in growing - to prevent movement - for movement of substances - during the day - Transfers energy - flow of electrons - to breath - magnetism
for movement of substances

If bacteria are able to increase the amount of nutrients in the soil, then what are able to increase the amount of nutrients in the soil? Answer choices: - Frogs - farms - mussels - bacteria - clams - plants - acid rains - tractors
bacteria