Which of the following are geochemical cycles important for recycling and balancing earth materials? 1) carbon and nitrogen cycles 2) hydrologic and rock cycles 3)hydrologic and tectonic cycles 4)rock and tectonic cycles

Option B

Explanation: The cycle that maintains the balance of the earth is hydrologic cycle that makes sure to provide the water to all the living systems on earth.

The amount of water that is evaporated is equal to the amount of water that is precipitated on the earth. This continuous movement of water is known as hydrologic cycle.

The rock cycle is responsible for providing the minerals to the soil and other parts that require minerals.

the sphincter muscles at the end of the digestive tract is the anus.

the answer is c.) there is a warm front in region a and a stationary front in region b.