Answer the following question given this paragraph: The first few species to colonize a disturbed area are called pioneer species. In primary succession, pioneer species must be organisms that can live on bare rock. They usually include bacteria and lichens (see Figure below ). Along with wind and water, the pioneer species help weather the rock and form soil. Once soil begins to form, plants can move in. The first plants are usually grasses and other small plants that can grow in thin, poor soil. As more plants grow and die, organic matter is added to the soil. This improves the soil and helps it hold water. The improved soil allows shrubs and trees to move into the area. Q: The first few species to colonize a disturbed area are called what? Choices: - producer species - original species - colonization species - pioneer species A:
pioneer species
Answer the following question given this paragraph: Q: What are the antibodies an animal produces after exposure to a microbial antigen? Choices: - isolated - monoclonal - chimeric - polyclonal A:
polyclonal
Q: Answer the following question given this paragraph: Average speed is distance divided by time. Q: Average speed is equal to distance divided by what? Choices: - weight - height - magnitude - time A:
A: time
Question: Answer the following question given this paragraph: The frequency , , is the number of cycles an object or wave goes through in 1 second. Frequency is measured in Hertz (Hz). 1 Hz = 1 cycle per sec. Q: In what unit is frequency measured in? Choices: - mole - centimeter - gram - hertz A:
Answer: hertz
*Question*
Answer the following question given this paragraph: At a geothermal power plant, engineers drill wells into the hot rocks. Hot water or steam may come up through the wells. Alternatively, water may be put down into the well to be heated. It then comes up. The hot water or steam makes a turbine spin. This makes electricity. Pictured below is an example of a geothermal power plant ( Figure below ). Q: Drilling wells into hot rocks to release hot water or steam is an example of what kind of power plant? Choices: - hydroelectric - solar - fossil fuel - geothermal A:
**Answer**
geothermal
(Question)
Answer the following question given this paragraph: When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the solid. Each ion goes its own way in solution. Saylor URL: http://www. saylor. org/books. Q: When an ionic compound dissociates in water, water molecules surround each ion and separate it from the rest of the what? Choices: - electron shell - mixture - gas - solid A:
(Answer)
solid