In some developing nations, the percentage of animal protein from fish in the diet can be as high as____. 20 percent 80 percent
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DNA is composed of nucleotides, which are composed of three parts:
1. A five carbon carbohydrate (pentose)
Pentose is classified as a monosaccharide (simple carbohydrate), and its molecular formula is represented by . They are water soluble molecules with sweet taste. Monosaccharides may have from three carbon atoms (trioses) to six (hexoses). In DNA is present pentose (5 carbon atoms)
2. A nitrogenous base
Nitrogenous bases are ring-shaped compounds that contain nitrogen in their molecular structure. They are classified into two groups: purines and pyrimidines
The purine bases are adenine (A) and guanine (G). They are larger and contain more than one ring in their structure,.
The pyrimidines, cytosine (C), uracil (U) and thymine (T), are smaller and composed of a single ring.
3. One or more phosphate groups
A phosphate consists of a trivalent anion that contains one phosphorus atom and four oxygen atoms. Its molecular formula is expressed by .
<u>Some ways to increase carbon dioxide and To reduce carbon dioxide:</u>
WAYS TO INCREASE CARBON DIOXIDE
- Consuming electricity: The main reason for the
emission is the burning of fossil fuels. 41% of the
- Deforestation: cutting of trees increases the
WAYS TO REDUCE CARBON DIOXIDE:
- Reuse and recycling: By buying used products and reselling or recycling are reduce your carbon emissions.
- Planting more trees: trees are used to stored the removed