Temperature limit
What will be an ideal response?
--80% of Earth experiences temperatures below 5°C
--Temperature limit for life ~ -20°C
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In the hydrologic cycle, water moves from the land to the air by ____ and returns to the land via ____
a. precipitation; evaporation and transpiration b. precipitation and evaporation; transpiration c. precipitation and transpiration; evaporation d. transpiration; precipitation and evaporation e. transpiration and evaporation; precipitation
Sweating to keep cool in the summer is the result of ____
a. hydrogen bonds breaking to release energy b. hydrogen bonds forming, which requires energy c. evaporation of water giving off energy d. cohesion of water molecules giving off energy e. cohesion of water molecules requiring energy
Dolly, the cloned sheep, had telomeres that:a
were unusually short. b. were unusually long. c. became longer with each cell division d. did not change in length e. were perfectly normal
When a chlorophyll molecule absorbs light, which excites an electron, the chlorophyll molecule:
A) releases kinetic energy. B) gains potential energy. C) releases a photon. D) returns to its resting state. E) reflects the photon.