stream-like movement of ocean water far below the surface caused by differences in density. deep-water zone -

first community of organisms to move into a new environment. pioneer species -

rock formation that is the source of soil. particle -

prevailing winds that blow from east to west between 60o and 90o latitude in both hemispheres. polar zone -

microscopic organisms that float or drift in large numbers in salt or fresh water; zooplankton—animal-like and phytoplankton—plant-like.   (planet comes from the word plankton) Plantae (Plant) -

glacial deposit that has been sorted and layered by the action of streams or melt water. stratosphere -

states the universe was formed by the explosion of a small amount of very dense and hot matter. bile

natural hot spring that occasionally sprays water and steam above the ground. giant star

group or chain of islands clustered together in a sea or ocean. area -

interaction between two or more living things in which they work together.                                                                                5 coral reef - [..]