Q: Which of the following causes a ship's iron anchor to sink to the ocean floor when it is released overboard? ----

A: gravity

Q: Why is protein an important part of a healthy diet? ----

A: It is needed to repair tissue.

Q: Which of these resources will most likely be depleted first? ----

A: Fossil fuels

Q: Organisms that consume wastes to obtain the nutrients they need to survive are classified as ----
A: decomposers