Sucking, swallowing, coughing, blinking, and yawning are all examples of:

Select the statement that best applies if you are trying to make a gamete (sperm or egg cell)

9 Which is the basic functional unit of life? organism organ tissue cell

All living organisms have complex organization, they are able to grow and develop, they are able to reproduce and pass on genetic information to their offspring, they are able to acquire and release energy, and they are able to maintain stable

Which of the following statements explain why red blood cells (RBCs) are highly specialized for oxygen transport? (1) RBCs contain hemoglobin. (2) RBCs lack a nucleus. (3) RBCs have many mitochondria and thus generate ATP aerobically.

How do our body systems depend on each other?

How much of a person's weight is water?

What are the two components of the central nervous system in vertebrates?

A river has a large amount of algae growing. Which most likely caused the growth?

Which of the following statements is true? Natural energy sources are nonrenewable and being depleted. Current fuels are not polluting the air. Mercury released into aquatic ecosystems comes from rock erosion.

Which causes a decrease in the amount of dissolved oxygen in a lake? A. lower temperatures B. fertilizer runoff C. overfishing