Which of the following statements about exponential growth curves is true? a. Exponential growth curves are common for R-selected species. b. Exponential growth curves show fast growth rates followed by slow growth rates. c. No organisms in nature experience exponential growth rates. d. Exponential growth curves are S-shaped. Please select the best answer from the choices provided A B C D Mark this and return

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

How many grams of phosphorus are contained in 5.09 moles of phosphorus?