If your diabetic sister is spending the day with you then you then I suggest you help her with most of the work
Tundra biome is the terrestrial biome which is characterized by long, cold
winters and short, cool summers.
The tundra biome is found in the polar desert regions where there are long
periods of winter. There is very little precipitation which is usually in the
form of snow.
This biome contains less nutrients and doesn't support much plant or animal
life. Plants such as lichens and mosses which are able to withstand dry and
cold conditions are found in this biome.
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The thymus gland is actually composed of lymphoid tissue and is located in the mediastinal cavity, in front of and above the heart.
<span>The thymus gland is a two-lobe primary lymphoid organ which has an important role in immune function. It secretes thymosin hormone which stimulates the maturation of T cells. So, the thymus is a place where T cells mature. This organ is most active during<span> the neonatal and pre-adolescent periods.</span></span>
A monomer of DNA is composed of nitrogenous base, a pentose sugar and a phosphate group.
<h3>What is the composition of DNA?</h3>
- A DNA molecule is made up of several repeating units called nucleotides.
- Each nucleotide is made up of 3 parts: base, sugar and phosphate.
- Nitrogen bases are cyclic carbon compounds and are of two types: Purines (Adenine and Guanine) and Pyrimidines (Cytosine and Thymidine).
- Purines bond with pyrimidines to form double helix of DNA.
- The sugar has pentose structure and is deoxyribose as it lacks 2’- OH group.
- The 1’ Carbon of sugar is attached to the 9’ nitrogen of purine or 1’ nitrogen of pyrimidine by glycosidic bond.
- The 5’ carbon of sugar is attached to phosphate group.
- The phosphate group is pentavalent with a double bonded oxygen and three single bond hydroxyl molecules.
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Answer is green tax or Environmental tax
Explanation: Green tax is an excise taxes on environmental pollutant or on goods whose use produces such pollutants. Green taxes are also a kind of economic instruments used to address environmental issues such as waste disposal, water pollution and air emissions. Some of the advantages of these green taxes includes environmental effectiveness, economic efficiency and the ability to raise public revenue.
