Which statement best describes a cell?

Where does the carbon dioxide in breath come from?

Your science teacher brings in a speaker to talk to your class about climate change. During the session, students ask a few questions. Which questions are related to the current evidence on climate change? 1.

Which best describes the characteristics of a river basin? A. the land drained by a river and its tributaries B. the land formed when rivers create estuaries and marshes C. the land at the mouth of a river where water flows into the ocean D.

Which is NOT a consequence of an erupting volcano? a. increased acidity can harm fish b. bird migration and ability to fly is affected c. insects could be severely depleted d. large rogue waves can be created

When enzyme action stops due to a build up of end product, this control is called ... ?

What are the basic function of fermentation?

In plants that undergo double fertilization, the structure that forms to nourish the seed is called the a. endosperm. b. egg cell. c. gamete. d. cone.

Definition of Homeostastis

You can eat as many empty calories as you want during the day because they do not count towards your daily totals. a. True b. False

Inorganic nutrients that your body needs, usually in small amounts, are called