What is evolution?
a. a measure of the relative survival and reproductive success of an individual
b. a cumulative change in the genetically controlled characteristics of a population
c. a physical change during an organism’s life that is inherited by its offspring
d. a random change in the proportions of alleles from generation to generation

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).

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols