The asian carp is now located in our american rivers. It has been harmful to the ecosystems it has entered and become overpopulated. It is an example of......

• Physical Change
• Habitat
• Organisms
• Invasive Species

A natural home for an organism.

• Ecosystem
• Habitat
• Biome
• Zoo

An area comprised of living and nonliving (abiotic and biotic) factors. 

• Ecosystem
• Habitat 
• Biome
• Zoo

non-native (or alien) organism to the ecosystem under consideration and whose introduction causes or is likely to cause economic or environmental harm.

• Animal
• Biotic
• Invasive Species
• Limiting Factor

A physical change to the environment would be.....

• Rainfall in the ecosystem
• Abiotic Factors in the ecosystem
• Human Construction in an ecosystem
• Climate

Biological changes in the ecosystem would be....

• Cutting down trees & building a dam
• Invasive species and planting new plants 
• Rainfall and moderate climate 
• Deserts and rainforests

Dams, construction, pollution, and oil towers new to an environment are considered......

• Bad
• Physical Changes
• Biological Changes
• Ecosystems

To maintain an ecosystem means to.....

• Keep it in balance 
• Overpopulate
• pollute
• make big changes

In a grassland ecosystem ___________ is the top predator.

• rhino
• zebra
• gazelle
• lion

_______________ may fall prey to a hawk. 

• Coral Reef
• Lion
• Mouse
• ant