If brakes cause friction, then what causes friction? Answer choices: - chemicals - Energy. - energy - wind - driving - brakes - heat - nerves
brakes

If monkeys communicate with sounds, chemicals or visual cues, then what uses sounds, chemicals and visual cues? Answer choices: - bees - seaweed - running - monkeys - humans - germs - athletes - coral
monkeys

If syngamy occurs in gametes, then what occurs in gametes? Answer choices: - offspring - pollen - resistance - Energy - Energy. - heat - syngamy - glucose
syngamy