Answer:
Explanation:
A cancer is a disease condition in which all the cells in the body continuous divide without control.
A tumor is when the uncontrolled cells growth occur in solid tissues like organs, tissues and bones in the body.
A tumor is formed when lump is developed in your body.
A tumor can become cancerous but not all.
Only malignant tumor are cancerous i.e they contain cancerous cells and can spread to all part of the body.
The answer to your question is A., as the random movement is a movement
Answer: ecosystem
An ecosystem is a community of living and non-living components. A coral reef is an aquatic ecosystem which is formed by a continuous walls of calcium carbonates released by living animals they get combine to form rocks. These rocks and walls are collectively called as hard stony corals. These hard stony corals provide shelter to many aquatic animals like fishes. As the water is the chief abiotic factor along with coral walls and rocks which help in the survival of living organisms therefore, ecosystem is the largest organizational level found in one coral reef.
