(Question)
Q: Clouds are formed from what? Choices: - ice crystals - snow flakes - dust particles - water droplets A:
(Answer)
water droplets

(Question)
Q: What do scientists use to study the deep without going to the seafloor? Choices: - drill rigs - telescopes - ultrasound machines - remotely operated vehicles A:
(Answer)
remotely operated vehicles

(Question)
Q: What is the plasma membrane formed by? Choices: - a cytoplasm bilayer - cholesterol byproduct - single lipid layer - a phospholipid bilayer A:
(Answer)
a phospholipid bilayer