Answer the following question given this paragraph: Water pollution comes from many sources. One of the biggest sources is runoff. Runoff picks up chemicals such as fertilizer from agricultural fields, lawns, and golf courses. It carries the chemicals to bodies of water. The added nutrients from fertilizer often cause excessive growth of algae, creating algal blooms (see Figure below ). The algae use up oxygen in the water so that other aquatic organisms cannot survive. This has occurred over large areas of the ocean, creating dead zones , where low oxygen levels have killed all ocean life. A very large dead zone exists in the Gulf of Mexico. Measures that can help prevent these problems include cutting down on fertilizer use. Preserving wetlands also helps because wetlands filter runoff. Q: What source of water pollution picks up chemicals from the ground with water and carries them to bodies of water? Choices: - fertilizer - erosion - sediment - runoff A:
runoff
Answer the following question given this paragraph: When water freezes in a non-crystalline, amorphous form as frost, the water molecules are fixed in place, but not in a regular, repeating pattern. Frost and other amorphous solids are characterized by their unorganized and unpredictable structure. Because ice comes in both amorphous and crystalline forms, there are differences in the physical properties of ice such as its hardness and density. Q: What kind of solid is characterized by an unorganized and unpredictable structure? Choices: - magnetic - aqueous - porous - amorphous A:
amorphous
Q: Answer the following question given this paragraph: CHAPTER SUMMARY 22.1 Prokaryotic Diversity Prokaryotes existed for billions of years before plants and animals appeared. Hot springs and hydrothermal vents may have been the environments in which life began. Microbial mats are thought to represent the earliest forms of life on Earth, and there is fossil evidence of their presence about 3.5 billion years ago. A microbial mat is a multi-layered sheet of prokaryotes that grows at interfaces between different types of material, mostly on moist surfaces. During the first 2 billion years, the atmosphere was anoxic and only anaerobic organisms were able to live. Cyanobacteria evolved from early. Q: What type of organism was the only able to live in the anoxic atmosphere of the first 2 billion years? Choices: - aerobic - protists - mammals - anaerobic A:
A: anaerobic
Question: Answer the following question given this paragraph: An ionic bond is electrostatic in nature. Q: What is an ionic bond in nature? Choices: - magnetic - radioactive - kinetic - electrostatic A:
Answer: electrostatic
*Question*
Answer the following question given this paragraph: Telescopes that use lenses to bend light are called refracting telescopes , or refractors ( Figure below ). The earliest telescopes were all refractors. Many amateur astronomers still use refractors today. Refractors are good for viewing details within our solar system. Craters on the surface of Earth's Moon or the rings around Saturn are two such details. Q: What are telescopes that use lenses to bend light called? Choices: - reflecting telescopes - sliding telescopes - layering telescopes - refracting telescopes A:
**Answer**
refracting telescopes
(Question)
Answer the following question given this paragraph: Q: What is given off from plants and taken in by animals? Choices: - methane - sulfur - nitrogen - oxygen A:
(Answer)
oxygen