(Q).
Q: What is the term for a period when temperatures are cooler than normal causing glaciers to spread to lower latitudes? Read this paragraph and choose the correct option from the provided answers: But ice ages also occurred many times in the past. An ice age is a period when temperatures are cooler than normal. This causes glaciers to spread to lower latitudes. Scientists think that ice ages occurred at least six times over the last billion years alone. How do scientists learn about Earth's past climates?. Choices: - cooling era - cold age - freezing point - ice age A:
(A).
ice age

(Q).
Q: What helps push the fetus from the uterus during birth? Read this paragraph and choose the correct option from the provided answers: Near the time of birth, the amniotic sac breaks in a gush of liquid. Labor usually begins within a day of this event. Labor involves contractions of the muscular walls of the uterus. With the mother's help, the contractions eventually push the fetus out of the uterus and through the vagina. Choices: - glands - tremors - Shaking - contractions A:
(A).
contractions

(Q).
Q: The number of electrons in the outer energy level determines what property of nonmetals? Read this paragraph and choose the correct option from the provided answers: Some nonmetals are very reactive, whereas others are not reactive at all. It depends on the number of electrons in their outer energy level. Choices: - density - permeability - vibration - reactivity A:
(A).
reactivity