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☆☆☆☆☆Fossil fuels are bad cause they release CO2
CLIMATE Change
Surface mining scars the land
do you mean fuels? nuclear energy is the best alternative energy source.
nonrenewable
Proteins and nucleic acids are different molecules. Amino acids are building block of proteins whereas nucleic acids are composed of nucleotides. The elements in both are carbon, hydrogen, oxygen , nitrogen, phosphorus and sulfur.
filtration
They trap the heat from the sun that is reflected by Earth
The Roman Empire built large systems of waterworks to both supply water and remove sewage from their cities, unfortunately Roman sewers usually just emptied into the nearest river polluting it.
It was not until the middle to late 1800s that Europe again created similar systems for handling sewage and not until the early 1900s that the addition of sewage treatment plants became common to minimize the pollution of the rivers the sewage was being dumped into.
electronic storage of files. apex
