Sickle cell anemia is the result of how many changes in each b-chain of normal hemoglobin?

A) 1
B) 2
C) 3
D) 4


A

Environmental & Atmospheric Sciences

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Metamorphic rocks where minerals have been flattened into layers by directed pressure are said to be

foliated. Indicate whether the statement is true or false.

Environmental & Atmospheric Sciences

Which biome has bitterly cold winters, hot dry summers, and receives sparse precipitation?

A. temperate grassland B. cold desert C. boreal forest D. temperate deciduous forest E. tropical rain forest

Environmental & Atmospheric Sciences

Which of the following are most commonly recycled from MSW, at the highest percentages?

A) Plastic food bags and glass B) Aluminum and glass C) Plastic, textiles, and old tires D) Yard wastes, paper, and paperboard

Environmental & Atmospheric Sciences

Locations that have the same Sun angle always have very similar temperatures

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences