Question 1

What are biogeochemical cycles?

Accepted Answer

Processes that maintain the balance of nutrients and energy in ecosystems

Answer

Processes that break down rocks and minerals

Answer

Processes that regulate the Earth's climate

Answer

Processes that convert organic matter into energy

Question 2

What are the four major biogeochemical cycles?

Accepted Answer

Water cycle, carbon cycle, nitrogen cycle, and phosphorus cycle

Answer

Oxygen cycle, carbon cycle, nitrogen cycle, and sulfur cycle

Answer

Water cycle, oxygen cycle, nitrogen cycle, and sulfur cycle

Answer

Carbon cycle, oxygen cycle, phosphorus cycle, and sulfur cycle

Question 3

What is the water cycle?

Accepted Answer

The continuous movement of water between the atmosphere, land, and oceans

Answer

The process by which nitrogen is converted into various forms that can be used by living organisms

Answer

The process by which phosphorus is cycled through the environment

Answer

The process by which carbon is exchanged between the atmosphere, oceans, and land

Question 4

What are the four main processes of the water cycle?

Accepted Answer

Evaporation, condensation, precipitation, and transpiration

Answer

Photosynthesis, respiration, decomposition, and combustion

Answer

Nitrogen fixation, nitrification, denitrification, and absorption

Answer

Weathering, absorption, decomposition, and combustion

Question 5

What is evaporation?

Accepted Answer

The process by which water changes from a liquid to a gas

Answer

The process by which water falls from the atmosphere to the Earth's surface

Answer

The process by which water vapor in the atmosphere cools and changes back into a liquid

Answer

The process by which water is released from plants into the atmosphere

Question 6

What is condensation?

Accepted Answer

The process by which water vapor in the atmosphere cools and changes back into a liquid

Answer

The process by which water falls from the atmosphere to the Earth's surface

Answer

The process by which water changes from a liquid to a gas

Answer

The process by which water is released from plants into the atmosphere

Question 7

What is precipitation?

Accepted Answer

The process by which water falls from the atmosphere to the Earth's surface

Answer

The process by which water is released from plants into the atmosphere

Answer

The process by which water vapor in the atmosphere cools and changes back into a liquid

Answer

The process by which water changes from a liquid to a gas

Question 8

What is transpiration?

Accepted Answer

The process by which water is released from plants into the atmosphere

Answer

The process by which water falls from the atmosphere to the Earth's surface

Answer

The process by which water changes from a liquid to a gas

Answer

The process by which water vapor in the atmosphere cools and changes back into a liquid

Question 9

What is the carbon cycle?

Accepted Answer

The continuous movement of carbon between the atmosphere, oceans, and land

Answer

The continuous movement of water between the atmosphere, land, and oceans

Answer

The continuous movement of nitrogen between the atmosphere, oceans, and land

Answer

The continuous movement of phosphorus between the atmosphere, oceans, and land

Question 10

What is photosynthesis?

Accepted Answer

The process by which plants, algae, and some bacteria use solar energy to convert carbon dioxide and water into organic compounds such as glucose

Answer

The process by which organisms break down organic compounds to release energy

Answer

The process by which organic matter is burned, releasing carbon dioxide into the atmosphere

Answer

The process by which dead organic matter is broken down by bacteria and fungi

Question 11

What is respiration?

Accepted Answer

The process by which organisms break down organic compounds to release energy

Answer

The process by which dead organic matter is broken down by bacteria and fungi

Answer

The process by which plants, algae, and some bacteria use solar energy to convert carbon dioxide and water into organic compounds such as glucose

Answer

The process by which organic matter is burned, releasing carbon dioxide into the atmosphere

Question 12

What is decomposition?

Accepted Answer

The process by which dead organic matter is broken down by bacteria and fungi

Answer

The process by which plants, algae, and some bacteria use solar energy to convert carbon dioxide and water into organic compounds such as glucose

Answer

The process by which organisms break down organic compounds to release energy

Answer

The process by which organic matter is burned, releasing carbon dioxide into the atmosphere

Question 13

What is combustion?

Accepted Answer

The process by which organic matter is burned, releasing carbon dioxide into the atmosphere

Answer

The process by which plants, algae, and some bacteria use solar energy to convert carbon dioxide and water into organic compounds such as glucose

Answer

The process by which organisms break down organic compounds to release energy

Answer

The process by which dead organic matter is broken down by bacteria and fungi

Question 14

What is the nitrogen cycle?

Accepted Answer

The process by which nitrogen is exchanged between the atmosphere, oceans, and land

Answer

The process by which phosphorus is exchanged between the atmosphere, oceans, and land

Answer

The process by which carbon is exchanged between the atmosphere, oceans, and land

Answer

The process by which water is exchanged between the atmosphere, oceans, and land

Question 15

What is nitrogen fixation?

Accepted Answer

The process by which nitrogen gas in the atmosphere is converted into ammonia by nitrogen-fixing bacteria

Answer

The process by which plants absorb nitrogen from the soil

Answer

The process by which nitrate is converted back into nitrogen gas by denitrifying bacteria

Answer

The process by which ammonia is converted into nitrite and then into nitrate by nitrifying bacteria

Question 16

What is nitrification?

Accepted Answer

The process by which ammonia is converted into nitrite and then into nitrate by nitrifying bacteria

Answer

The process by which nitrogen gas in the atmosphere is converted into ammonia by nitrogen-fixing bacteria

Answer

The process by which nitrate is converted back into nitrogen gas by denitrifying bacteria

Answer

The process by which plants absorb nitrogen from the soil

Question 17

What is denitrification?

Accepted Answer

The process by which nitrate is converted back into nitrogen gas by denitrifying bacteria

Answer

The process by which plants absorb nitrogen from the soil

Answer

The process by which nitrogen gas in the atmosphere is converted into ammonia by nitrogen-fixing bacteria

Answer

The process by which ammonia is converted into nitrite and then into nitrate by nitrifying bacteria

Question 18

What is the phosphorus cycle?

Accepted Answer

The process by which phosphorus is exchanged between the atmosphere, oceans, and land

Answer

The process by which water is exchanged between the atmosphere, oceans, and land

Answer

The process by which carbon is exchanged between the atmosphere, oceans, and land

Answer

The process by which nitrogen is exchanged between the atmosphere, oceans, and land

Question 19

What is weathering?

Accepted Answer

The process by which rocks and minerals are broken down into smaller particles

Answer

The process by which plants, algae, and some bacteria use solar energy to convert carbon dioxide and water into organic compounds such as glucose

Answer

The process by which dead organic matter is broken down by bacteria and fungi

Answer

The process by which organic matter is burned, releasing carbon dioxide into the atmosphere

Question 20

What is absorption?

Accepted Answer

The process by which plants absorb nutrients from the soil

Answer

The process by which organic matter is burned, releasing carbon dioxide into the atmosphere

Answer

The process by which dead organic matter is broken down by bacteria and fungi

Answer

The process by which rocks and minerals are broken down into smaller particles

Question 21

What is eutrophication?

Accepted Answer

The process by which excessive nutrients in water bodies lead to an overgrowth of algae and other aquatic plants, which can deplete oxygen levels and harm aquatic life

Answer

The process by which nitrate is converted back into nitrogen gas by denitrifying bacteria

Answer

The process by which nitrogen gas in the atmosphere is converted into ammonia by nitrogen-fixing bacteria

Answer

The process by which ammonia is converted into nitrite and then into nitrate by nitrifying bacteria

Question 22

How do human activities impact biogeochemical cycles?

Accepted Answer

They can increase or decrease the amount of nutrients and energy in ecosystems

Answer

They can regulate the Earth's climate

Answer

They can convert organic matter into energy

Answer

They can break down rocks and minerals

Question 23

What is the main human activity that has significantly impacted the carbon cycle?

Accepted Answer

Deforestation

Answer

Overfishing

Answer

Soil erosion

Answer

Desertification

Question 24

What is the main human activity that has significantly impacted the nitrogen cycle?

Accepted Answer

Use of fertilizers

Answer

Overfishing

Answer

Desertification

Answer

Soil erosion

Question 25

What is the main human activity that has significantly impacted the phosphorus cycle?

Accepted Answer

Mining of phosphorus

Answer

Overfishing

Answer

Soil erosion

Answer

Desertification

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