Energy & Matter in Ecosystems!

What is the main difference between biotic and abiotic factors?

• biotic is living, abiotic is non-living

• biotic is non-living, abiotic is living

• biotic and abiotic are both living

• biotic and abiotic are both non-living

What is climate?

• conditions including wind, temperature, and moisture

• daily weather conditions in an area

• how hot or cold an area is

• average weather conditions in an area over time

What is an ecosystem?

• all living things in an area

• all living and non-living things in an area

• layer of gasses that surrounds Earth

• all organisms and weather conditions in an area

Is there more nitrogen or oxygen in Earth's atmosphere?

• nitrogen

• oxygen

What weather conditions contribute to climate?

• temperature, moisture, and wind

• wind, soil, and mositure

• temperature, wind, and soil

• water, wind, and soil

What is the driving force behind the water cycle?

• gravity

• plants

• sunlight

• wind

Which is NOT a process of the water cycle?

• evaporation

• condensation

• respiration

• precipitation

Most of Earth's water is in the ______.

• lakes

• underground reservoirs

• atmosphere

• oceans

Nitrogen is an important element in _______, which all organisms need to survive.

• amino acids

• proteins

• bacteria

• carbon

What is the process in which nitrogen changes from a gas into a form that organisms can use called?

• Denitrification

• Nitrifying bacteria

• Nitrates

• Nitrogen fixation