BIO-Ecology-Biogeochemical Cycles

What is another term used for "Biogeochemical Cycles"?

• Energy Cycles

• Nutrient Cycles

• Water Cycles

• Carbon Cycles

What do biogeochemical cycles represent?

• The movement of energy through an ecosystem

• The movement of a particular form of matter through the living and nonliving parts of an ecosystem

• The movement of animals between habitats

• The movement of water only through the environment

Which of the following is NOT one of the three main biogeochemical cycles studied in ecosystems?

• Water (Hydrologic)

• Carbon

• Nitrogen

• Oxygen

Why must essential nutrients be continuously cycled on Earth?

• Because Earth is an open system

• Because matter can be created and destroyed

• Because Earth is a closed system and matter can neither be created nor destroyed

• Because nutrients are unlimited

Which statement best explains the importance of biogeochemical cycles in an ecosystem?

• They allow energy to be created from nothing.

• They ensure that essential nutrients are available for living organisms by cycling matter through living and nonliving parts of the ecosystem.

• They only affect nonliving parts of the ecosystem.

• They prevent the movement of matter in the environment.

Which of the following is another name for the water cycle?

• Nitrogen cycle

• Carbon cycle

• Hydrologic cycle

• Oxygen cycle

What is the chemical formula for water?

• CO₂

• H₂O

• O₂

• H₂SO₄

Where is the majority of Earth's water found?

• In glaciers

• In rivers

• In the ocean

• In the atmosphere

Why is water necessary for all living things?

• It provides energy

• It is necessary for life processes

• It is used for building shelter

• It is a source of light

Which of the following best explains why only a small percentage of Earth's water is available as liquid freshwater?

• Most water is in the atmosphere

• Most water is in the ocean and much of the freshwater is frozen in glaciers

• Most water is in living organisms

• Most water is underground