| adapt |
to change for a particular use. |
| Antarctica |
the continent that surrounds the South Pole. |
| arctic |
(often capitalized) of or having to do with the region around the North Pole. |
| axis |
a real or imaginary line through the center of an object, around which the object turns. |
| breed |
to keep for mating and reproduction. |
| camouflage |
a way of hiding something by covering or coloring it so that it looks like its surroundings. The military uses camouflage to hide people, buildings, or vehicles from the enemy. |
| carnivore |
an animal that eats the flesh of other animals. |
| clash |
to strike together with force, making a loud noise. |
| communicate |
to exchange ideas or information. |
| determine |
to decide or set. |
| dominant |
most powerful. |
| estimate |
a guess about the amount, size, or value of something. |
| extinct |
no longer existing. |
| global warming |
an increase in the world's temperatures, which many scientists believe is caused in part by the greenhouse effect. |
| hemisphere |
either of two halves of the earth. A hemisphere is formed by dividing the earth into the Northern and Southern Hemispheres at the equator, or into the Eastern and Western Hemispheres at a meridian. |
| |
a half of any sphere. |
| isolate |
to set apart in order to make alone. |
| permanent |
lasting or intended to last forever; not temporary. |
| population |
the total number of people living in a country, city, or other area. |
| submarine |
a sea vessel that can travel under water. |
| vocalize |
to make (sounds) with the voice; utter. |
| whimper |
to cry in weak, broken sounds. |