Which of the following is an example of an abiotic factor

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

Which statement explains how gravity and intertia work together

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.