Q: Q: Hydroelectric power harnesses the energy of what? Choices: - weather - heat - air - water A:
A: water

Q: Q: Rh antibodies can prove dangerous if they cross what barrier in pregnancy? Choices: - stomach - fungal - embryo - placental A:
A: placental

Q: Q: What serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body? Choices: - cells immune system - super immune system - immense immune system - innate immune system A:
A: innate immune system

Q: Q: Excretion is the process of removing excess water and wastes from the body. what are the main organs of excretion? Choices: - eyes - lungs - brains - kidneys A:
A: kidneys