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

Some species of wasps are social. the queen starts a colony from scratch each spring. she builds a small nest, and lays and raises a group of female workers. the workers enlarge the nest while the queen continues to lay eggs. unfertilized eggs become males that mate with newly hatched females. all of the wasps except the newly fertilized females die by the summer. which best describes this behavior? a)it is beneficial only to the males that do not fertilize eggs. b)it is beneficial only to the female workers that are not fertilized. c)it is beneficial to each one of the individual colony members. d)it is beneficial to the whole species, but not to all of the individual members.