Plants and animals are living, but animals and human are the first things that humans identify as living. ... Fire meets a few of these qualities, but for anything to be living it must exhibit all eight characteristics of life. ...

• Word Count: 278
• Approx Pages: 1
• Grade Level: High School

The rock or soil, which may have been blue or grey in colour (characteristic of a deficiency of oxygen), is discoloured into a reddish-brown- a process better known as rusting. ... Natural change happens as a result of climatic and geological processes, and the migration of animals and plants....

• Word Count: 953
• Approx Pages: 4
• Has Bibliography
• Grade Level: Undergraduate