Q: Fact 1: Most canyons are formed by flowing rivers through erosion over long periods of time. Fact 2: Deep gorges and canyons formed by the river are tourist attractions. Given the two facts above, answer the question "What are formed by flowing rivers through erosion over long periods of time?" with the following options: - Sediment - soft soil - forests - deep gorges - cloud cover - patch reefs - big oceans - kalenchoes
A: deep gorges

Q: Fact 1: Asolution is formed by one substance being dissolved in another substance. Fact 2: Solvents are substances, usually liquid, that dissolve other substances. Given the two facts above, answer the question "What is formed when solvants are dissolved?" with the following options: - salinity - solids - calcite - bacteria - moistures - patch reefs - Solutions - liquids
A: Solutions

Q: Fact 1: Mutations are essential for evolution to occur. Fact 2: Evolution can be defined as continual progress. Given the two facts above, answer the question "What is mutation essential for?" with the following options: - rapid expansion - sickness - a continual progress - resistance - growth - allow growth - Plant reproduction - chromosomes
A: a continual progress

Q: Fact 1: Some mollusks are nearly microscopic. Fact 2: Mollusks are invertebrates and are no exception. Given the two facts above, answer the question "What are nearly microscopic?" with the following options: - all invertebrates - planets - some invertebrates - remains of prehistoric life - barnacles - Veins and arteries. - major threat to health - all vertebrates
A: some invertebrates