Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. ... Below that is a liquid outer core of nickel and iron. ... The biosphere contains all the planet's living things. ... Within the biosphere, living things form ecological communities based on the physical surroundings of an area. ... It extends from less than 1 m below the planet's surface to more than 10,000 km above the planet's surface. ...

• Word Count: 1504
• Approx Pages: 6
• Grade Level: High School

Living arrangements d. ... Most ships were equipped with partial decks and platforms in the space below. ... The living conditions of slaves are described as being unsanitary and infested with filth that caused disease. ... Once purchased, slaves were kept in slave quarters in the back of their master's hose where living conditions were as rough as what the African captives were forced to live under. ...

• Word Count: 2584
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

This figure alone is comparable to that of the holocaust, but experts say that there is still hope and that the figures could change if interventions and anti-retroviral drugs are made affordable, which will be discussed below. ... This is prevalent in any person who is living with the disease. ...

• Word Count: 2501
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

Approximately half of Africa is covered by savannas of some sort (about five million square miles), beginning just below the tropic of Cancer and continuing down to the tropic of Capricorn. ... They are very social animals, living in groups or families called prides. ...

• Word Count: 2357
• Approx Pages: 9
• Has Bibliography
• Grade Level: High School