Answer the following question given this paragraph: Temperature falls from the equator to the poles. Global air currents create wet and dry zones at different latitudes. They also create global winds. Q: What creates wet and dry zones at different latitudes? Choices: - jet stream - trade winds - horse latitudes - global air currents A:
global air currents
(Question)
Answer the following question given this paragraph: Courtesy of NASA. Radio waves lie at the far left of the electromagnetic spectrum . Public Domain. Q: Where do radio waves lie on the electromagnetic spectrum? Choices: - middle - far right - top - far left A:
(Answer)
far left
Ques: Answer the following question given this paragraph: Ocean water normally dissolves some of the carbon dioxide in the atmosphere. The burning of fossil fuels has increased the amount of carbon dioxide in the atmosphere. As a result, ocean water is also dissolving more carbon dioxide. When carbon dioxide dissolves in water, it forms a weak acid. With higher levels of dissolved carbon dioxide in ocean water, the water becomes more acidic. This process is called ocean acidification. Q: What has the burning of fossil fuels increased in the atmosphere? Choices: - ozone - oxygen - temperature - carbon dioxide A:
Ans: carbon dioxide
(Q).
Answer the following question given this paragraph: Because the nuclei of each H atom contain protons, the electrons in the bond are attracted to the nuclei (opposite charges attract). But because the two atoms involved in the covalent bond are both H atoms, each nucleus attracts the electrons by the same amount. Thus the electron pair is equally shared by the two atoms. The equal sharing of electrons in a covalent bond is called a nonpolar covalent bond. Now consider the HF molecule:. Q: Because the nuclei of each h atom contain protons, the electrons in the bond are attracted to the nuclei (opposite charges attract). but because the two atoms involved in the covalent bond are both h atoms, each nucleus attracts the electrons by the same amount. thus the electron pair is equally shared by these? Choices: - four atoms - one atom - nine atoms - two atoms A:
(A).
two atoms
Ques:Answer the following question given this paragraph: Figure 8.15 A photosystem consists of a light-harvesting complex and a reaction center. Pigments in the lightharvesting complex pass light energy to two special chlorophyll a molecules in the reaction center. The light excites an electron from the chlorophyll a pair, which passes to the primary electron acceptor. The excited electron must then be replaced. In (a) photosystem II, the electron comes from the splitting of water, which releases oxygen as a waste product. In (b) photosystem I, the electron comes from the chloroplast electron transport chain discussed below. Q: In a photosystem, pigments in the light-harvesting complex pass light energy to two special molecules of what in the reaction center? Choices: - calcium - carbonate - nutrient - chlorophyll A:

Ans:chlorophyll
Ques:Answer the following question given this paragraph: All living things are able to maintain a constant internal environment through homeostasis. Q: What process enables all living things to maintain a constant internal environment? Choices: - peristalsis - consciousness - ketosis - homeostasis A:

Ans:
homeostasis