The human, animal, plants and other organism not mentioned all have different organs in them with different functions. ... It has a control system and it is this control system that keeps the cell reproducing the right way and reproducing the right amount so as not to invade organs or produce and cause serious problems in the organ. ... Every plant and animal including humans both utilize the mitosis and meiosis cell division. ... The mitosis division is the asexual reproductive type. ... A bad cell control system really happen and is recessive. ...

• Word Count: 656
• Approx Pages: 3
• Has Bibliography
• Grade Level: High School

Healthy and balanced natural systems are essential for supporting life on this planet. ... Our respiratory organs, our vision, and our hearing are damaged because of the high amounts of contaminants in the air, water, and soil. A substantial number of people have conditions such as asthma, other respiratory problems or difficulties with additional organs of the body. ... They can affect the central nervous system, and other body systems, as well. ... Some birds experienced a decline in population, but also suffered serious hormonal and reproductive changes. ...

• Word Count: 2478
• Approx Pages: 10
• Grade Level: High School

They can invade and damage nearby tissues and organs. Cancer can also break away from a malignant tumor and enter the bloodstream and lymphatic system. ... It was discovered that when radioactive waves were directed on human cells, the cells would be destroyed. ... Mutations of the p53 gene are the most frequent abnormality identified in human tumors. ... She said she pictured the tumor as a large block of cheese and her immune system as a pack of mice. ...

• Word Count: 1594
• Approx Pages: 6
• Grade Level: High School