1. Fossil fuels are formed by decomposed organisms.

Coal: remains of ancient vegetation.

Crude oil: a complex mixture of hydrocarbons and small amounts of chemicals like sulfur.

Natural gasses: a mixture of hydrocarbons with small molecules. 

2. Countries that use the most coal:

China

USA

India

3. Countries with the largest oil reserves(un-mined coal):

USA

Russia

China

Seawall! 

Description:  a man-made wall that has a purpose to keep sea waves from getting up onto land.

 Disadvantages: The waves hit the seawall upwards and downwards. The downwards hit moves the sand and the water moves down the seawall, causing it to create the area before the seawall to have a downwards slope. 

 Citation: Learner's Dictionary. 2013. Merriam-Webster, Incorporated. 9 Jan. 2013 <http://www.learnersdictionary.com/search/seawall>.

 

Strip Cropping

What it is: Strip cropping is done by putting different crops next together in strips because of the amount of water and fertilization another one needs. If there was one crop that needed a lot like corn and wheat, it would die faster because of taking too much for itself. They plant crops that do not need these as much like alfalfa, with crops that take a lot, so one can create a barrier to keep it even and balanced.

Citation: Dennis Carman, P.E., USDA-NRCS, Little Rock, Arkansas