SKILL BUILDER Reading Strategy
Fill in the chart to preview the lesson. Then, write one sentence to explain what you
think this lesson will be about.
What is the title of this
lesson?
What is the guiding ques-
tion for this lesson? .
How is the lesson
organized?
What do the photos
show?
What do the graphs
show?

Can bacteria reproduce in a way such that when you start out with two bacteria, you get five bacteria? why or why not? * a. yes, because bacteria reproduce sexually, and can produce any number of offspring, just as humans do. b. no, because bacteria grow at an exponential rate. c. no, because when bacteria reproduce, they split into two parts, and two bacteria splitting would result in four bacteria.

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food