Answer: carbon cycle
Explanation: Well there are 4 biogeochemical cycles, one is the hydrological cycle(water), the carbon cycle, the phosphorus cycle, and the nitrogen cycle, they are all essential to plant photosynthesis to happen.
The principle of original horizontality provides the basis for the law of superposition.
Explanation:
The principle horizontal principle explains that all strata were originally horizontal in sedimentary rocks.
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Because as they het higher the molecules in the air spread apart so there is less air as you get higher
most living animals are harmful to humans so most non domesticated animals and venomous animals
