What is one result of a chemical change? a. energy is created. b. a new material is formed. c. materials change from one state to another. d. elements are permanently destroyed.

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

What are the pros and cons of quadrat sampling?

Which best describes how sediment forms? loose material is cemented by pressure. erosion breaks down rock and other material. molten rock cools above earth's surface. chemical changes cause sediment to compact together.