A statement that explains an observation and is supported by data is a

scientific question

hypothesis

scientific theory

bias statement

What is the state of matter with the weakest or no attractive forces?

A complex of interconnected food chains in an ecosystem is called a/an a. ecosystem. b. food web. c. ecological pyramid. d. trophic stack.

What is the name of the structure that connects the two sister chromatids?

The Ogallala Aquifer provides freshwater to many of the Western states.

Which of the following is not true about Y-linked disorders? They can affect males or females They only affect males. They involve mutations along the Y chromosome.

If you set up an experiment and the results do not support your hypothesis, what should you conclude? A.) You may want to alter some aspects of your experiment and try it again. B.) You should give up on this research project. C.

The cancellation of two waves occurs because of which of the following

What is it called when a bacterium uses a virus to transfer its DNA to another bacterium?

Which definition best describes global warming? A. A long-term change in the Earth's climate B. A long-term increase in the Earth's average temperature C. A long-term change in the climate of a region or a city D.

Which of these phases of mitosis takes place first?