Which if the following statements best explains why the plant life cycle is described as an "alternation of generations"? a. the plant life cycle is divided into young and old generations. b. the plant life cycle alternates between two different species of plants. c. the plant life cycle includes both photosynthesis and respiration. d. the plant life cycle goes back and forth between a haploid stage and a diploid stage.

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

This comparative chart is an example of one that might be used by scientists and law enforcement personnel for identification purposes. the chart represents a technological advance called