Endangered, Vulnerable, and Threatened Species

With respect to matter, Earth is a closed system and with respect to energy, Earth is an open system.

Rainforests once covered 14% percent of the earths surface, now they cover a mere 6%

As a prosperous, developed, modern nation Ireland no longer has a staple food. The potato used to be a staple, but the population now has a very varied diet.

An organism particular role in an ecosystem is called a niche.

settlements that are permanent rather than transitory.

Competitive exclusion.

An important effect that hunter-gatherer societies may have had on the environment was, EXTINCTION.

Evolution

Wetlands contribute to the refilling of aquifers

elk

Fundamental niche is always larger

50%

An animal is considered an endangered species when there is a small amount of them left

Yes, the first agricultural revolution occurred around 10,000 years ago.

detritus

dis dick

the continental shelf

The Neritic Zone is the region that receives lots of sunlight and extends to a depth of about 200 meters.

Streams and rivers are the result of rain falling to the ground. The water runs downhill and flows towards the sea.

Irrigation.