(Q).
Answer the following question given this paragraph: Reproduction is how organisms produce offspring. The ability to reproduce is a characteristic of all living things. In some species, all the offspring are genetically identical to the parent. In other species, each offspring is genetically unique. Look at the kittens in Figure below . They are brothers and sisters, but they are all different from each other. Why does this happen in some species but not others? It's because there are two types of reproduction. Reproduction can be sexual or asexual. Q: The two general types of reproduction are sexual and what? Choices: - primitive - bisexual - unisexual - asexual A:
(A).
asexual

(Q).
Answer the following question given this paragraph: The evolution of life on Earth wasn't always smooth and steadyfar from it. Living things had to cope with some astounding changes. Giant meteorites struck Earth's surface. Continents drifted and shifted. Ice ages buried the planet in snow and ice for millions of years at a time. At least five times, many, if not most, of Earth's living things went extinct. Extinction occurs when a species completely dies out and no members of the species remain. But life on Earth was persistent. Each time, it came back more numerous and diverse than before. Q: Ice ages, continental drift, and giant meteorites striking earth have caused what phenomenon? Choices: - gravity - waves - depletion - extinction A:
(A).
extinction

(Q).
Answer the following question given this paragraph: Chemical weathering is different than mechanical weathering. The minerals in the rock change their chemical makeup. They become a different type of mineral or even a different type of rock. Chemical weathering works through chemical reactions that change the rock. Q: What works through chemical reactions that change the rock? Choices: - gradual weathering - chemical breakdown - rock weathering - chemical weathering A:
(A).
chemical weathering