If you could travel back in time to when the Earth first formed as a planet: What kind of life would you encounter?
- All types of life in water and land, except people.
- All types of life in water and land, including people.
- Animal and plant life in water, but none on land.
- Simple, one celled organisms.
- There would be no life on Earth.
There would be no life on Earth.
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Which statement about the disadvantages of bottled water is false?
A. Plastic bottles have a lifespan of hundreds of years in a landfill. B. Most plastic bottles are recycled. C. Enough plastic bottles are discarded annually to circle the earth 280 times. D. The withdrawal of water to make bottled water is depleting some aquifers. E. The manufacture and transportation of bottles releases toxic chemicals and greenhouse gases.
The _________ includes both oceans and freshwater sources, such as lakes and rivers
Fill in the blank(s) with correct word
Put the layers of an ophiolite complex in order from top to bottom:
A) Gabbro B) Deep-sea sediments or sedimentary rocks C) Sheeted dike complex D) Pillow basalts 1) Layer 1 (Uppermost layer) 2) Layer 2 3) Layer 3 4) Layer 4 (Lowermost layer)
The O horizon, which is found only in some soil profiles, is an oxygen-rich layer.
Answer the following statement true (T) or false (F)