A - Saprobes are organisms that feed on dead or decaying organic matter.
Answer:
Humans have a variety of effects on the physical environment, including overcrowding, pollution, the use of fossil fuels, and deforestation. Climate change, soil erosion, poor air quality, and undrinkable water have all been driven by such changes.
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Asymmetry is the lack of symmetry.
The bear affects the ecosystem by eating plants and animals which lowers invasive species levels.
