Human development is a complex process. where does human development occur?
a. in a structure of the female urinary system
b. in a structure of the female digestive system
c. in a structure of the female circulatory system
d. in a structure of the female reproductive system

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).

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?