Plural Noun

(singular: bacterium) single-celled organisms found in every ecosystem on Earth.

Noun

edge of land along the sea or other large body of water.

detritus
Noun

non-living organic material, often decomposing.

Noun

act in which earth is worn away, often by water, wind, or ice.

juvenile
Noun

animal that is no longer a baby but has not reached sexual maturity.

mangrove
Noun

type of tree or shrub with long, thick roots that grows in salty water.

migratory
Adjective

organisms that travel from one place to another at predictable times of the year.

Noun

substance an organism needs for energy, growth, and life.

predator
Noun

animal that hunts other animals for food.

root
Noun

part of a plant that secures it in the soil, obtains water and nutrients, and often stores food made by leaves.

Noun

solid material transported and deposited by water, ice, and wind.

subtropical
Adjective

bordering the tropics, just north of the Tropic of Cancer and south of the Tropic of Capricorn.

tropical
Adjective

existing in the tropics, the latitudes between the Tropic of Cancer in the north and the Tropic of Capricorn in the south.