Problem: John is studying the different states of matter. Today, he has a matter in three states in front of him, state A, state B, and state C. State A is in solid state. State B is in liquid state. And, state C is in gaseous state. He needs to determine the properties of each state. If energy is applied, state B would adopt which state, state A or state C?

A: state C

Problem: Bob is a biologist. Today, he has four samples of organisms to test, sample A, sample B, sample C, and sample D. He induced higher respiration rate in sample A. Then he induced no respiration rate in sample B. Next, he classified sample C as heterotrophic and sample D as autotrophic. Would sample D make their own glucose or acquire it from other organisms?

A: make their own glucose

Problem: India decided to introduce several exotic species into their environment, while Singapore was very protective of its native species. Which country introduced more non-native species to the environment?

A: India

Problem: In the sixteenth century the State of Michigan had forests all over. But that has long been gone. Especially, in the state's northeast part the vegetation has been cleared in the twentieth century. Wooded areas were replaced by farm lands. All these farmlands were under heavy Irrigation. At one time, in the sixteenth century, plant species like elm and oak used to be plentiful. We still had some elms and oaks in the twentieth century, but they were not great many in number. Was the water table in increased or decreased level in northeast Michigan during sixteenth century?

A:
decreased