What should you check first if the numeric keypad on a standard desktop keyboard is not working?

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

Graphs you see question 5 options: the change in data over time the relationship between different dependent variables the relationship between the independent variable and the dependent variable/s the relationship between different independent variables

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.