You are looking at a terrarium. That's a mini ecosystem inside a glass container. The terrarium is filled with soil, small rocks, and small plants. Yet, not only healthy plants are
inside. There are a few brown and decaying plants, too. You see that one part of the
glass is foggy.
Explain what evidence you see of the cycling of matter inside the terrarium. Think about
the water cycle that you observe at work inside the terrarium. Think about the carbon
and nitrogen cycles, too.
3

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

What is the difference between sex-linked traits and autosomal traits in humans? a. sex-linked traits can only be passed from fathers to sons, while autosomal traits can be passed on from both parents to offspring of any sex. b. sex-linked traits are passed on through the x and y chromosomes, while autosomal traits are passed on through the other 22 chromosomes. c. sex-linked traits only affect females, while autosomal traits affect both males and females. d. sex-linked traits refer to genes that are on the x and y chromosomes, while autosomal traits refer to genes on all 23 chromosomes.