(Q).
Q: What natural destructive element cuts away at rock forming river valleys? Choices: - sediment - lava - air - water A:
(A).
water

(Q).
Q: Where do all plants come from? Choices: - phylogenetic ancestors - distant ancestors - cetacean ancestors - terrestrial ancestors A:
(A).
terrestrial ancestors

(Q).
Q: Which group of metals in the periodic table include elements such as sodium and potassium? Choices: - igneous metals - actinides - lanthanides - alkali metals A:
(A).
alkali metals