Explain the roles each kingdom plays in an ecosystem and its importance to the sustainability of that ecosystem.

1. Monera - includes bacteria that plays several roles like nitrogen fixation.

2. Protista - produce more oxygen as compared to all land plants put together.

3. Fungi  - fungi degrades organic matter and recycle nutrients in the ecosystem.

4. Plantae - plants carry out the process of photosynthesis and maintains the CO2 and O2 level of the atmosphere.

5. Animalia - animals play a key role in stabilizing the food chain of the ecosystem.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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