1.is the maximum number of living organisms of one species that an area's resources can sustain indefinitely without environmental degradation. 2.__refers to the wearing a way og field's topsoil by the natural physical forces of water or through forces associated with farming activities such as tillage.

3.What process describes the upward movement of pollutants or toxic substances in the food chain and become concentrated at each level?

4.What is known as the process by which body of water becomes enrich in dissolve nutrients(such as phospates)that simulate the growth of aquatic plant, life usually resulting in the depletion of dissolve oxygen?
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Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.

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 process the first step in making a protein from dna intrsuction