Question 1:

Which of the following biogeochemical cycles is responsible for the movement of carbon through the Earth's atmosphere, oceans, and land?

Explanation: The movement of carbon through the Earth's atmosphere, oceans, and land is known as the carbon cycle. It involves processes such as photosynthesis, respiration, combustion, and decomposition. Therefore, option C is correct.

Question 2:

Which of the following biogeochemical cycles is primarily driven by bacteria that convert atmospheric nitrogen into a form usable by plants?

Explanation: The nitrogen cycle is primarily driven by bacteria that convert atmospheric nitrogen into a form usable by plants. This process is called nitrogen fixation and is essential for the growth and development of plants. Therefore, option B is correct.

Question 3:

Which of the following biogeochemical cycles is responsible for the movement of water between the Earth's surface, atmosphere, and underground?

Explanation: The movement of water between the Earth's surface, atmosphere, and underground is known as the water cycle. It involves processes such as evaporation, condensation, precipitation, and runoff. Therefore, option A is correct.

Question 4:

Which of the following biogeochemical cycles is important for the formation of DNA, RNA, and ATP?

Explanation: The phosphorus cycle is important for the formation of DNA, RNA, and ATP (adenosine triphosphate). Phosphorus is a key element in these molecules and is essential for cellular processes and energy transfer. Therefore, option D is correct.

Question 5:

Which of the following biogeochemical cycles is primarily influenced by human activities such as burning fossil fuels and deforestation?

Explanation: The carbon cycle is primarily influenced by human activities such as burning fossil fuels and deforestation. These activities release large amounts of carbon dioxide into the atmosphere, contributing to the greenhouse effect and climate change. Therefore, option C is correct.