Which division of time during Earth's history came first?

a. The Paleozoic Era

b. The Cenozoic Era

c. The Late Precambrian

d. The Mesozoic Era

Which area is affected by global warming? A. Area 1: the chemical balance changes in lakes, rivers, and streams B. Area 2: a layer of haze forms near the ground and affects human health C. Area 3: carbon dioxide and water trap heat energy D.

If a male hydra is cut into pieces, and each piece regenerates to become a new hydra, will the new hydras be male or female? Explain your answer.

Which cell part would provide electricity

7. How are the Adirondack Mountains believed to have been named?

Several environments in which you are more likely to find archaea than bacteria are

Need the answer quickly A scientist observed that fiddler crabs are capable of plugging up the territorial burrows that they live in.

Calcium and bromine would join with a __bond and sulfur oxygen would join with a ___bond

What does lipase digest? A. Carbohydrates B. Proteins C. Fats

1. Any molecule that contains carbon to hydrogen bonding is known as a A) water B) inorganic molecule C) organic molecule 2. How many valance electrons are generally needed to fill the outer shell of most atoms? A) 4 B) 6 C) 8 3.

Benefits of using coal oil and natutal gas