There are 2 types of ecosystems in the world.  Terrestrial ecosystems and aquatic ecosystems. Aquatic ecosystems are ____________based.

• Land
• Rock
• Water
• Space

A(n) _______________ is all the living organisms that live in an area and all the nonliving features of their environment.

• Ecosystem
• Habitat
• Population
• Biome

Which is an example of parasitism?

• cat and mouse
• tadpole and frog
• human and tapeworm
• caterpillar and butterfly

Which term best describes two predators living in the same habitat who feed on the same prey?

• coexistence
• competition
• mutualism
• variation

A pride of lions stalks, tackles, and kills an antelope. Which is best being demonstrated?

• predation
• mutualism
• lionization
• competition

A _____ is all the populations of organisms in an area.

• Population
• Individual 
• Community
• Neighborhood 

A living factor in an ecosystem, such as a plant or animal is ___________. 

• biotic
• abiotic
• adaptation
• producer

A group of organisms of the same species living in the same area are called a/an ________.

• community
• habitat
• population
• ecosystem

Biotic factors are the __________ factors in an environment.

• nonliving
• living
• dead
• funny looking

The place an organism lives is called its

• Habitat
• Population
• Ecosystem
• Community