What is ecology and what is ecosystem

Ecosystem :

Any living organism interacting with its physical environment by any means is known as Ecosystem.

Ecology :

Ecology is the study of the ecosystem. In this field of biology, we study how an organism interact with its physical environment and how the environment respond.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

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