carbon and oxygen cycle Flashcards
What is the primary process by which plants convert carbon dioxide into oxygen?
Photosynthesis
True or False: The carbon cycle only involves the atmosphere and living organisms.
False
Fill in the blank: The process of breaking down organic matter and releasing carbon dioxide back into the atmosphere is called __________.
Respiration
What are the two main gases involved in the carbon and oxygen cycle?
Carbon dioxide and oxygen
Which organism is primarily responsible for the process of photosynthesis?
Plants
Multiple Choice: Which of the following processes releases carbon dioxide into the atmosphere? A) Photosynthesis B) Respiration C) Transpiration D) Nitrogen fixation
B) Respiration
What is the role of decomposers in the carbon cycle?
Decomposers break down dead organic matter, releasing carbon back into the soil and atmosphere.
True or False: Oceans play a significant role in the carbon cycle by absorbing carbon dioxide.
True
What is the term for the long-term storage of carbon in geological formations?
Carbon sequestration
Fill in the blank: The __________ cycle describes the movement of oxygen through the atmosphere, biosphere, and lithosphere.
Oxygen
What human activities significantly impact the carbon cycle?
Burning fossil fuels and deforestation
Multiple Choice: Which of the following processes is NOT part of the carbon cycle? A) Photosynthesis B) Combustion C) Erosion D) Respiration
C) Erosion
What is the greenhouse effect?
The warming of Earth’s surface due to the trapping of heat by greenhouse gases, including carbon dioxide.
True or False: Oxygen is produced as a by-product of photosynthesis.
True
Fill in the blank: Carbon dioxide is absorbed by __________ during photosynthesis.
Plants
What is the significance of the carbon cycle for climate regulation?
It helps regulate Earth’s temperature and climate by controlling the amount of carbon dioxide in the atmosphere.
Multiple Choice: Which of the following is a carbon sink? A) Forests B) Cars C) Factories D) Airplanes
A) Forests
What is the main source of oxygen in the Earth’s atmosphere?
Photosynthesis by plants and phytoplankton
True or False: Carbon is cycled through the biosphere, atmosphere, geosphere, and hydrosphere.
True
Fill in the blank: The process of __________ involves the conversion of carbon dioxide and water into glucose and oxygen using sunlight.
Photosynthesis
What role do fossil fuels play in the carbon cycle?
Fossil fuels release stored carbon back into the atmosphere when burned.
Multiple Choice: Which of the following is a result of increased carbon dioxide levels in the atmosphere? A) Increased photosynthesis B) Ocean acidification C) Enhanced plant growth D) All of the above
D) All of the above
What is the process by which carbon is transferred from the atmosphere to the soil?
Carbon fixation
True or False: Animals contribute to the carbon cycle primarily through respiration.
True
