Q2 Ecosystems: Cycles of Matter

The process by which water evaporates from plants through the pores in their leaves is called...

• transpiration

• precipitation

• runoff

The process of converting nitrogen gas in the air into nitrates in the soil is known as:

• Denitrification

• Nitrogen conservation

• Nitrogen fixation

The process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another is called:

• biogeochemical cycles

• cellular respiration

• photosynthesis

• Krebs cycle

______________ is an important nutrient because it is a major component of all organic molecules (such as carbohydrates, lipids, nucleic acids, and proteins).

• Carbon

• Nitrogen

• Phosphorus

Bacteria convert nitrates into nitrogen gas in a process called:

• nitrogen fixation

• denitrification

• cellular respiration

• photosynthesis

______________ is an important nutrient because it needed to make proteins and nucleic acids (DNA & RNA). In gaseous form, it also makes up 78% of earth's atmosphere.

• Carbon

• Nitrogen

• Phosphorus

Rain, sleet, snow, and hail are all forms of _____.

• Percolation
• Evaporation
• Condensation
• Precipitation

What is A?

• Evaporation
• Condensation
• Precipitation
• Runoff

What is B?

• Evaporation
• Condensation
• Precipitation
• Runoff

The continuous process by which water moves from Earth's surface to the atmosphere and back

• Nitrogen Cycle
• Carbon Oxygen Cycle
• WaterCycle
• Nitrogen Fixation