Q: What measure is resorted to by people who wish to screen out genetic abnormalities in the fetus? Choices: - contraceptive use - in vitro fertilization - stem cell therapy - prenatal testing A:
prenatal testing

(Question)
Q: Mammoths, close genetic relatives of modern elephants, are believed to have gone extinct due to hunting by humans and what factor? Choices: - volcanic eruptions - earthquakes - migration change - climate change A:
(Answer)
climate change

Ques: Q: The ocean is the largest marine biome. it is a continuous body of salt water that is relatively uniform in chemical composition; it is a weak solution of mineral salts and decayed what? Choices: - uranium atoms - rock shards - metal ores - biological matter A:
Ans: biological matter

(Q).
Q: Tissues are organized by what? Choices: - branches - lipids - structures - cells A:
(A).
cells

Ques:Q: What can radioactive strontium replace in the human body making it dangerous? Choices: - potassium - oxygen - magnesium - calcium A:

Ans:calcium

Q: What state of hydrogen can be predicted based on the atoms to which it is bonded? Choices: - condensation - precipitation - evaporation - oxidation A:
oxidation