ENVIRONMENTAL SCIENCE FORM 2 - ECOSYSTEMS

An ecosystem is a

• community of organisms interacting organisms with each other

• community of interacting organisms and their environment

• community of organisms interacting independently with their environment

"Ecosystems produce special services", choose the services provided by ecosystems

• oxygen

• food

• medicine

• building materials

• galaxies

"When an ecosystem is disrupted organisms cannot thrive",

• True

• False

Humans disrupt ecosystems by which of the following ways

• polluting the environment

• deforestation

• urban development

• hunting

• creating natural reserves

An invasive species are living things

• that are naturally found in all ecosystems

• that are naturally found in a particular ecosystem

• that are not naturally found in a particular ecosystem

Some examples of invasive species in the Caribbean are

• lion fish

• African snail

• wild pigs

• red eared snipper turtle

When invasive species are introduced three possible things can happen to existing animals

• ecosystem disappear

• animals can adapt

• existing animals can die

• animals may move and find new homes

Freshwater ecosystems are a subset of Earth's aquatic ecosystems

• True

• False

Some examples of freshwater ecosystems are

• ponds

• oceans

• rivers

• wetlands

• springs

"Freshwater ecosystems are some of the largest ecosystems on earth"',

• True

• False