Answer the following question given this paragraph: The term theory is used differently in science than it is used in everyday language. A scientific theory is a broad explanation that is widely accepted because it is supported by a great deal of evidence. Because it is so well supported, a scientific theory has a very good chance of being a correct explanation for events in nature. Because it is a broad explanation, it can explain many observations and pieces of evidence. In other words, it can help connect and make sense of many phenomena in the natural world. Q: What allows theories to be widely accepted? Choices: - hypothesis - observation - theory - evidence A:
evidence
Answer the following question given this paragraph: Generators change the kinetic energy of a spinning turbine to electrical energy in a process called electromagnetic induction. You can read about generators and how they work in the chapter "Electromagnetism. ". Q: Through a process called electromagnetic induction, generators change what energy form of a spinning turbine to electrical energy? Choices: - potential - seismic - electric - kinetic A:
kinetic
Q: Answer the following question given this paragraph: Topsoil has the highest proportion of organic material. Topsoil is essential for farming. Q: What layer of soil, essential for farming, has the highest proportion of organic material? Choices: - bedrock - humus - subsoil - topsoil A:
A: topsoil
Question: Answer the following question given this paragraph: Q: Phytochromes regulate many plant responses to what? Choices: - heat - gravity - oxygen - light A:
Answer: light
*Question*
Answer the following question given this paragraph: Q: What are the poles labeled? Choices: - west and south - southwest and south - east and west - north and south A:
**Answer**
north and south
*Question*
Answer the following question given this paragraph: Chondrichthyes: Cartilaginous Fishes The clade Chondrichthyes is diverse, consisting of sharks (Figure 29.11), rays, and skates, together with sawfishes and a few dozen species of fishes called chimaeras, or "ghost" sharks. " Chondrichthyes are jawed fishes that possess paired fins and a skeleton made of cartilage. This clade arose approximately 370 million years ago in the early or middle Devonian. They are thought to be descended from the placoderms, which had skeletons made of bone; thus, the cartilaginous skeleton of Chondrichthyes is a later development. Parts of shark skeleton are strengthened by granules of calcium carbonate, but this is not the same as bone. Most cartilaginous fishes live in marine habitats, with a few species living in fresh water for a part or all of their lives. Most sharks are carnivores that feed on live prey, either swallowing it whole or using their jaws and teeth to tear it into smaller pieces. Shark teeth likely evolved from the jagged scales that cover their skin, called placoid scales. Some species of sharks and rays are suspension feeders that feed on plankton. Q: Shark teeth likely evolved from the jagged scales that cover their skin, called what? Choices: - heterotroph scales - hook scales - pinworm scales - placoid scales A:
**Answer**
placoid scales