Ecosystem and Nutrient Cycle Quiz

What is the primary source of energy for ecosystems?

• Nutrients

• Water

• Sunlight

• Soil

According to the law of conservation of mass, matter:

• Can be created or destroyed

• Is always recycled

• Is only found in living organisms

• Cannot be transformed

Which of the following is NOT a nutrient essential for life?

• Carbon

• Nitrogen

• Argon

• Phosphorus

What process breaks down large rocks into soil?

• Erosion

• Weathering

• Photosynthesis

• Transpiration

The exchange of matter through the biosphere is termed:

• Biogeochemical cycle

• Nutrient cycle

• Energy cycle

• Matter cycle

Where do plants primarily obtain nutrients?

• From other plants

• From the air, soil, or water

• From animals

• From decomposers

What is the process by which water vapor cools and forms clouds?

• Evaporation

• Transpiration

• Condensation

• Precipitation

What percentage of Earth's water is freshwater?

• 10%

• 25%

• 3%

• 50%

During photosynthesis, plants convert carbon dioxide and water into:

• Oxygen

• Proteins

• Carbohydrates

• Fats

What process releases carbon dioxide back into the atmosphere?

• Photosynthesis

• Cellular respiration

• Nitrogen fixation

• Weathering