Answer the following question given this paragraph: Opaque matter is matter that does not let any light pass through it. Matter may be opaque because it absorbs light, reflects light, or does both. Examples of opaque objects are solid wooden doors and glass mirrors. A wooden door absorbs most of the light that strikes it and reflects just a few wavelengths of visible light. A mirror, which is a sheet of glass with a shiny metal coating on the back, reflects all the light that strikes it. Q: What is the term for matter that does not let any light pass through it, whether it absorbs light, reflects light, or does both? Choices: - devoid - obscene - artificial - opaque A:
opaque
Answer the following question given this paragraph: Oceans are the major source of water vapor in the atmosphere. Sunlight heats water near the sea surface ( Figure below ). As the water warms, some of it evaporates. The water vapor rises into the air, where it may form clouds and precipitation. Precipitation provides the freshwater needed by plants and other living things. Q: What is the major source of water vapor in the atmosphere? Choices: - drift - sea - streams - ocean A:
ocean
Q: Answer the following question given this paragraph: Stuart Webster. Blue cheese is blue because of the fungus growing throughout it. . CC BY 2.0. Q: Why is blue cheese blue? Choices: - artificial dye - bacteria - fermentation - fungus A:
A: fungus
Question: Answer the following question given this paragraph: There are about 10,000 living species of birds. Almost all of them can fly. Flying birds are classified in 29 orders. Most species belong to the order of perching birds. A few birds are flightless, such as the ostrich and penguin, but they evolved from a flying ancestor. Q: What important and unusual physical property (for birds) do ostriches and penguins share? Choices: - waterproofness - webbed feet - bonelessness - flightlessness A:
Answer: flightlessness
*Question*
Answer the following question given this paragraph: Chromosomes are coiled structures made of DNA and proteins. They form after DNA replicates and are the form in which the genetic material goes through cell division. Chromosomes contain genes, which code for proteins. Q: What do we call coiled structures made of dna and proteins? Choices: - nodes - Organisms - Molecules - chromosomes A:
**Answer**
chromosomes
Answer the following question given this paragraph: Q: Prions are slow-acting, virtually indestructible infectious proteins that cause diseases of what vital organ in mammals? Choices: - heart - lung - liver - brain A:
brain