Which era follows the end of the Cretaceous period?

1. Precambrian

2. Mesozoic

3. Paleozoic

4. Cenozoic

Which of these phenomena cause uneven heating of the Earth? Land and water have different heat capacities. Land and water have the same rate of heat absorption. The angle of incoming sunlight varies at different places.

Organisms rely on both negative feedback processes and behavior to maintain what

In bohrs model of the atom which of the following is true A) Electrons travel in defined circular orbits around the nucleus like planets orbiting the sun. B) Each orbit has a certain amount of energy associated with it.

Ms. Crawford gave the following instructions to her science class: • Place an empty water bottle on the table and remove the lid. Carefully pour 10 ml of vinegar into the bottle.

Which behavior is most likely to increase your chance of developing a cancer? a. spending too many hours in the sun b. eating too many vegetables c. sleeping too much d. taking vitamins

Which of the following is a feeding source for fens? aquifers dexfoliants exfoliants nitrates

What system includes oceans, lakes, rivers, and groundwater? a. geosphere b. hydrosphere c. atmosphere d. biosphere

Fungal spores a. are only asexually produced. b. cannot be seen in a light microscope. c. are used to identify fungi. d. are produced by molds but not by yeasts. e. are only produced under harmful environmental conditions

Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm.

What's the function of rough er