Quiz for September 26, 2019 Environmental Unit 2 and Cycles

Seven-eight percent of Earth’s atmosphere is made up of

• Oxygen

• Hydrogen

• Nitrogen

• Carbon dioxide

Which of the following gases is not a greenhouse gas?

• Water vapor

• Nitrogen

• Methane

• Carbon dioxide

Currents at the surface of the ocean are moved mostly by

• Heat

• Wind

• Salinity

• The mixing of warm and cold water

Which of the following statements is not true of consumers?

• They get energy indirectly from the sun.

• They are called heterotrophs.

• They make their own food.

• They sometimes eat other consumers.

From producer to secondary consumer, about what percentage of energy is lost?

• 10 percent

• 90 percent

• 99 percent

• 100 percent

What is the term for the area where organisms live together with their physical environment?

• Biome

• Biosphere

• Ecosystem

• Population

Which of the following is NOT an example of an abiotic component of an ecoystem?

• Water

• Fungi

• Minerals

• Air

Which of the following is fixed from the atmosphere by bacteria?

• Carbon

• Nitrogen

• Phosphorus

• Sulfur

Excessive use of fertilizer that contains nitrogen and phosphorus

• affects the carbon cycle

• may cause algal blooms in waterways

• causes soil erosion

• contributes to primary succession

Which of the following about the nitrogen cycle is NOT true?

• Animals get nitrogen by eating plants and other animals

• Plants generate nitrogen on their own inside their roots.

• Nitrogen moves back and forth between the atmosphere and living things.

• Decomposers break down waste to yield ammonia.