Which type of energy does not create waste but could cause ecological impacts and flooding?

a) geothermal energy
b) hydroelectric energy
c) tidal energy
d) wave energy

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?