All of the following are secondary succesion except

the area where a river meets an ocean contains both freshwater and salt water

estuary

the normal, gradual changes that occur in the types of species that live in an area

succesion

a cold, dry, treeless region, sometimes called a cold desert

tundra

17. regions that are wet for all or most of a year

wetlands

All of the following are secondary succesion except

exposed coral reefs

Deserts have all of the following EXCEPT

little wind

the first living things to arrive at a primary succession

pioneer species

Temperate deciduous forests have all of the following EXCEPT ______.

poor soil for plants

Grassland biomes have all of the following EXCEPT ______.

slight tempature range

a cold forest region dominated by cone-bearing evergreen trees

taiga

forest with warm temperatures, wet weather, and lush plant growth

tempture decidous forest

forest with warm temperatures, wet weather, and lush plant growth

tropical rainforest

A ______ biome is a cold, dry area where the sun barely rises during winter.

tundra

the driest biome, often covered with a thin, sandy, or gravelly soil, contains little organic matter

desert

large geographic areas that have similar climates and ecosystems

biomes

a community that has reached a stable stage of ecological succession

climax community

ecosystems formed from the calcium carbonate shells secreted by animals

coral reefs

temperate and tropical regions that receive between 25 cm and 75cm

grasslands

the portion of the shoreline that is covered with water at high tide and exposed to the air during low tide

interidial zone