If wind erodes soil, then what erodes soil? Answer choices: - mines - sun - earthquakes - rivers - animals - wind - mold - rain
wind

If arainbow is formed by refraction of rays by separating rays into all different colors, then arainbow is formed by what of rays? Answer choices: - an electron microscope - energy of moving objects - heat energy - Solar energy - rain or sun shine - separation of colors - sun's heat - flow of electrons
separation of colors

If primary producers utilize photosynthesis for chemical energy, then what utilize photosynthesis for chemical energy? Answer choices: - Most plants - Primary producers - engines - circulatory systems - organisms - dirt - heterotrophs - solar panels
Primary producers