Subtracting cellular respiration from gross primary productivity is the calculation for secondary productivity
net primary productivity
normalized difference vegetation index
principle productivity

Which of the following is one of the most common causes of collisions? a. driving on the wrong side of the road b. driving too slowly uphill c. tailgating d. eating while driving

Cigarette manufacturers purposefully add to cigarettes in order to give them a particular flavor. a. cocaine b. carcinogens c. cigarette ashes d. a and b

It's important to recognize children when they follow the rules because not doing so can a. them to develop their self-esteem. b. improve their self-image. c. to develop self-regulation. d. cause them to act out to receive adult attention.