What does the replacement-level fertility rate include that is not part of the total fertility rate?

A) Nutrition of the family
B) Infant and childhood mortality
C) Availability of mates
D) Use of birth control


B

Environmental & Atmospheric Sciences

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What can increase the variation of genetic traits in a population?

A) Mutations B) Adaptations C) Natural selection D) All of these choices

Environmental & Atmospheric Sciences

On a hypothetical planet with physical and atmospheric characteristics similar to Earth, which location would be expected to have a higher incidence of tornadoes?

A) a mountainous continent bordering a warm ocean covering a wide range of latitudes B) a flat continent bordering a cold ocean covering a wide range of latitudes C) a flat continent bordering a warm ocean covering a wide range of latitudes D) a mountainous continent bordering a cold ocean covering a wide range of latitudes

Environmental & Atmospheric Sciences

In what continent would you find a polar desert?

A. Africa B. South America C. Australia  D. Antarctica

Environmental & Atmospheric Sciences

Soil organisms usually stay ________ the soil. 

A. Close to the surface of B. Deep below the surface of C. Near the middle of D. About half stay close to the surface and the other half stay deep below the surface of the soil E. Spread uniformly throughout

Environmental & Atmospheric Sciences