(Question)
Answer the following question given this paragraph: Jet streams are fast-moving air currents high in the troposphere. They are also the result of unequal heating of the atmosphere. Jet streams circle the planet, mainly from west to east. The strongest jet streams are the polar jets. PIctured below is the northern polar jet ( Figure below ). Q: What do you call the fast-moving air currents high in the troposphere? Choices: - stationary fronts - wind streams - cyclones - jet streams A:
(Answer)
jet streams

(Question)
Answer the following question given this paragraph: Eukaryotic cells contain a nucleus and several other types of organelles. These structures are involved in many vital cell functions. Q: What type of cell contains a nucleus? Choices: - candid cell - endogenous cell - chloroplasts cell - eukaryotic cell A:
(Answer)
eukaryotic cell

(Question)
Answer the following question given this paragraph: Your large intestine is not just made up of cells. It is also an ecosystem , home to trillions of bacteria known as the "gut flora" ( Figure below ). But don't worry, most of these bacteria are helpful. Friendly bacteria live mostly in the large intestine and part of the small intestine. The acidic environment of the stomach does not allow bacterial growth. Q: Friendly bacteria live mostly in the large intestine and part of the small intestine, because what organ is too acidic? Choices: - skin - rectum - liver - stomach A:
(Answer)
stomach