Explain the importance of excretion in human being.

Which of the following is a global economic issue? O A. The leader of a profitable company has retired. O B. One country has more tourism than another. O C. Many countries are increasing their use of fossil fuels. O D.

How much of a cell in the human body is composed of water? O A. 75 to 90% B. 75 to 80% C. 50 to 60% O D. 10 to 20%

Wet poorly drained soil is known as a

Where does a plant get the carbon dioxide that it needs for the dark reaction of photosynthesis

Osteoid-producing osteoblasts must rely upon this organelle to produce primary structures leading to the formation of collagen and calcium-binding proteins.

Describe the water that is most likely to float on the surface of the ocean.

Bryophytes are known as non-vascular plants. what makes them non-vascular?

If a person eats hurriedly and barely choose his food before swallowing it what effect will that likely have on his stomach?

What makes a living thing living?

A carcinogen is a cancer-causing substance.