(Q).
Q: What does antifreeze do to the freezing temperature of the water in car radiators? Choices: - raises it - keeps it constant - foresees it - lowers it A:
(A).
lowers it

(Q).
Q: What are the most abundant unicellular algae in the oceans? Choices: - chlorella - sporozoans - staurikosaurus - chryosophytes A:
(A).
chryosophytes

(Q).
Q: While components of a mixture can be separated by physical means, the components of a pure substance can only be broken down through what means? Choices: - mechanical - radiation - thermal - chemical A:
(A).
chemical