Cells.
Every organ is made up of a lot of cells.
Answer: 28%
Explanation:
Use Chargaff's rules which states that 100% is total of all 4 bases and Adenine and Thymine need to have 1:1 ratio and Cytosine and Guanine need to have 1:1 ratio
21% Adenine and 21% Thymine
21% + 21% = 42 100 - 42 = 56 56 / 2 = 28
28% Cytosine and 28% Guanine
Climate zones. Based on latitude and solar radiation, the Earth can be divided into three main areas of climate types: Tropics - between the Tropic of Cancer and the Tropic of Capricorn; warm/hot. Temperate - north and south of the tropic lines to the Arctic Circles; warm and cool.
The answer is d.
a-->t
g-->c
t-->a
c-->g
Hope this helps!