Q: What helps ensure that, at least, some species will survive environmental change? Choices: - reproduction - ecosystem - spontaneous mutation - biodiversity A:
biodiversity

(Question)
Q: The periodic table is an arrangement of the elements in order of increasing what? Choices: - gravity numbers - metallic numbers - negative numbers - atomic numbers A:
(Answer)
atomic numbers

Ques: Q: Water, carbon dioxide, and what other element are important agents of chemical weathering? Choices: - helium - methane - sulfur - oxygen A:
Ans: oxygen

(Q).
Q: Which scientist was responsible for the theory of evolution by natural selection? Choices: - stephen hawking - galileo Galilei - albert einstein - charles darwin A:
(A).
charles darwin

Ques:Q: What done ozone help protect against? Choices: - gamma rays - x-rays - helium rays - ultraviolet rays A:

Ans:ultraviolet rays

Ques: Q: All cells need what for energy? Choices: - oxygen - light - insulin - glucose A:
Ans:
glucose