Which of the following are true? question 2 options: primary succession begins in an area that does not have soil. secondary succession occurs in an area that already had life and soil. primary succession begins in an area that did not have life before. all of these are true.

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

In a cladogram' when does a group of organisms branch off

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.