What are fermented foods?
You have probably heard of sauerkraut and kimchee. These are examples of fermented foods, but beware if you are buying these straight from the shelf at the supermarket. 955 more words
There are many types of environmental pollutions. The typical categories are air-, water-, earth-, noise-, light- and thermo-pollution.
We will deal with air and land pollution. 4,091 more words