Reduce the use of harmful products to the environment. Ways to reduce pollution in your home: 1  Buy biodegradable products. 2  Store all liquid chemicals and waste in spill-proof containers. 3  Eat organic foods that are grown without pesticides. 4  Look out for fertilizer or pesticide free products when you go to the market.educe the use of harmful products to the environment. Ways to reduce pollution in your home: 1  Buy biodegradable products. 2  Store all liquid chemicals and waste in spill-proof containers. 3  Eat organic foods that are grown without pesticides. 4  Look out for fertilizer or pesticide free products when you go to the market.
The four nitrogenous bases found in DNA are; Adenine (A), Thymine (T), Guanine (G) and Cytosine (C).
Figure 3 shows the structures of the four nitrogen bases found in DNA. Note the symbols for the bases. A nucleotide consists of one nitrogen base, one phosphate group, and one deoxyribose molecule. Study Figure 4 to see how the phosphate group, deoxyribose molecule, and nitrogen base are related in a nucleotide.