Life is sustained by the flow of energy from the sun through the biosphere, the cycling of nutrients with the biosphere and gravity.

Which is NOT one of the four major component's of earth's life support system?

Which sphere includes rock, soil, and sediment portions of Earth?

Which sphere includes all living things?

Thin spherical envelope of gases surrounding the earth’s surface

(inner layer) of the atmosphere: where weather happens • Air we breath

contains ozone layer (global sunscreen) • Filters out ~95% sun’s harmful UV radiation

Water vapor in atmosphere • Liquid water on surface and underground • ICE - Polar ice, iceburgs, glaciers, in permafrost layer (frozen soil) • Oceans = 71% of the globe (contain 97% of earth’s water)

_________% of the globe is made up of Oceans

__________% of all water on earth is salt water

• Intensely HOT core • Thick mantle composed mostly of rock • Thin outer crust (contains, fossil fuels, minerals, soil nutrients)

• Consists parts of atmosphere, hydrosphere, geosphere • no thicker than “an apple’s skin”

Terrestrial (land) portions of the Biosphere can be divided into _____________- large areas with distinct climates and communities of organisms

(watery portions of the Bipshere) Fresh water zones Marine (salt water) zones

Which of the following is NOT one of the three interconnected factors which govern life on Earth?