I need help with that.

The three main cycles of an ecosystem are the water cycle, the carbon cycle and the nitrogen cycle. These three cycles working in balance are responsible for carrying away waste materials and replenishing the ecosystem with the nutrients necessary to sustain life.

Explanation:

cycles such as the water cycle keep the earth hydrated by feeding rain to trees, plants, etc.

the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

explanation:

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b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.