<span>An ecosystem involves both the biological (plants, animals, human beings) and non-biological (land, water, soil, and atmosphere) community which interacts as a system. More importantly, the living things are very dependent on the abiotic community since it cannot survive by itself. Every animal, plant and human needs the primary physiological needs of water, food and shelter provided by the abiotic system.
POND
ROCKS
MOUNTAINS
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B. Weighing , because all its checking is the weight.
Yes it is alive . It respires , photosynthesizes and grows . It reacts to stimuli ( sunlight ) and tries to survive by adapting to the environment . Its' billions of cells form into transport vessels , roots , leaves and other structures to facilitate the creation and use of energy .
It is mitosis hope this helps you !!