Ecology Review 1 (Ch. 3-4)

When we discuss greenhouse gases what is the main one we discuss?

• Methane (CH₄)
• Carbon Dioxide (CO₂)
• Nitrous oxide (N₂O)
• Flourinated gases

T/F: Some greenhouse gases are naturally present in the Earth's atmosphere

• True
• False

What is the greenhouse effect?

• The warming of a planet due to trapped radiation.
• The cooling of Earth due to air pollution.
• The heating of a solid, such as a rock.

Which of the following natural events is NOT a source of carbon dioxide?

• Wildfire

• Decomposing plants and animals

• Volcanic eruption

• Earthquake

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• humans have been working hard to decrease carbon dioxide levels
• atmospheric carbon dioxide levels have increased steadily since 1960

Organisms who are members of the same species in an ecosystem.

• Organism

• Population

• Organ

• Community

A biological community that includes various species and their physical environment (Biotic and Abiotic Factors).

• Organism

• Community

• Biosphere

• Ecosystem

Where life is found on earth.

• Community

• Habitat

• Ecosystem

• Biosphere

What terms should replace X and Y in the table?

• elements; compounds

• abiotic; biotic

• microscopic; macroscopic

• natural; man-made

All energy in an ecosystem comes from the sun. This energy is passed through the ecosystem as organisms eat other organsims.

• Ominvores

• Herbivores

• Detritivores

• Flow of energy