Answer the following question given this paragraph: Most air masses form over polar or tropical regions. They may form over continents or oceans. Air masses are moist if they form over oceans. They are dry if they form over continents. Air masses that form over oceans are called maritime air masses. Those that form over continents are called continental air masses. The image below shows air masses that form over or near North America ( Figure below ). Q: If an air mass forms over an ocean it is called what type of air mass? Choices: - cumulus - hurricane - tropical - maritime A:
maritime
(Question)
Answer the following question given this paragraph: Skeletons made of cartilage rather than bone. Cartilage is supportive tissue that does not have as much calcium as bones, which makes bones rigid. Cartilage is softer and more flexible than bone. Q: What does cartilage lack compared to bones, making it softer and less rigid? Choices: - potassium - magnesium - protein - calcium A:
(Answer)
calcium
Ques: Answer the following question given this paragraph: The first case of West Nile virus in North America occurred in 1999. Within just a few years, the virus had spread throughout most of the United States. Birds as well as humans can be infected with the virus. Birds often fly long distances. This is one reason why West Nile virus spread so quickly. Q: Where did west nile first appear? Choices: - Central America - North Africa - Southeast Asia - north america A:
Ans: north america
(Q).
Answer the following question given this paragraph: Plastids are membrane-bound organelles with their own DNA. Examples are chloroplasts and chromoplasts. Chloroplasts contain the green pigment chlorophyll and carry out photosynthesis. Chromoplasts make and store other pigments. They give flower petals their bright colors. Q: Chloroplasts and chromoplasts are examples of which membrane bound organelle containing their own dna? Choices: - chromosomes - polymers - bacteria - plastids A:
(A).
plastids
Ques:Answer the following question given this paragraph: As you can see from the figure, the egg rests in a nest of cells called a follicle . The follicle and egg grow larger and go through other changes. The follicle protects the egg as it matures in the ovary. Q: What nest of cells protect the egg as it matures in the ovary? Choices: - the tube - the clump - the epidermis - the follicle A:

Ans:the follicle
Answer the following question given this paragraph: Find the microwave in the Figure above . A microwave is an electromagnetic wave with a relatively long wavelength and low frequency. Microwaves are often classified as radio waves, but they have higher frequencies than other radio waves. With higher frequencies, they also have more energy. That's why microwaves are useful for heating food in microwave ovens. Microwaves have other important uses as well, including cell phone transmissions and radar. These uses are described below. You can learn more about microwaves and their uses in the video at this URL: http://www. youtube. com/watch?v=YgQQb1BVnu8 . Q: Why do microwaves have a higher energy than radio waves? Choices: - higher resonance - lower frequency - higher decibel - higher frequency A:
higher frequency