The graph describes how the solubilities of two salts change as water temperature changes. Which two statements are true, based on the relationships shown in the graph? More sodium chloride than potassium nitrate can dissolve in cold water.
Potassium nitrate's solubility increases much more than sodium chloride's as water temperature increases.
Sodium chloride's solubility is greater in cold water than in hot water.
Less potassium nitrate than sodium chloride dissolves in hot water.

Which describes a grizzly bear’s habitat?

On a backpacking trip, kenny hikes all day at a steady pace, covering 30 kilometers and burning 4000 calories. at the school track, janelle runs the 100-meter sprint in 13.5 seconds, burning 10 calories. afterward, janelle’s leg muscles are aching and she is breathing hard, while kenny maintains normal breathing all day, even though he burns 400 times more calories than janelle. which two statements offer the best explanation for this phenomenon? a. if the aerobic pathway—cellular respiration—cannot meet the energy demand, then the anaerobic pathway—lactic acid fermentation—starts up, resulting in lactic acid buildup and "oxygen debt." b. aerobic cellular respiration produces more energy, but its use is limited because of lactic acid buildup in the muscles and the resulting "oxygen debt." c. after about 90 seconds of intense exercise, the muscles become depleted of oxygen, and anaerobic respiration can no longer function to produce atp, resulting in "oxygen debt." d. the rate of energy demand determines how the muscles will obtain energy, either from cellular respiration or from lactic acid fermentation if not enough oxygen is present.

Which nutrient tends to cycle within a single ecosystem?