Organisms, Ecosystems, and Evolution

Which of the following is NOT a level of organization in ecosystems?

• community
• species
• population
• organism

A single living thing

• organism

• population

• community

• ecosystem

cactus, snake, coyote, sagebrush, and hare in the same area.

• community

• abiotic factors

• population

• niche

Coyote, sand, 102 degrees, cactus, and snake.

• ecosystem

• biomes

• niche

• community

Which choice shows the correct order of the levels of environmental organization?

• organism, population, community, ecosystem, biosphere

• organism, population, ecosystem, biosphere, community

• organism, community, population, ecosystem, biosphere

• population, ecosystem, biosphere, organism, community

Temperature, light, air, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

Is a weather an abiotic or biotic factor? 

• abiotic
• biotic

A living or once-living organisms in an ecosystem is a

• population
• biotic factor
• abiotic factor
• community

Many fish die due to a drastic change in water temperature.

• Density-Dependent

• Density-Independent

Which of the following is a density-dependent limiting factor?

• human activities

• unusual weather

• competition

• natural disaster