Answer:
Adenine.
Explanation:
In the list provided, uracil (U) is not a nitrogenous base found in DNA. It is instead found in RNA. The DNA bases are adenine, guanine, cytosine, and thymine.
The nitrogenous bases found in DNA are adenine (A), guanine (G), cytosine (C), and thymine (T). In this case, uracil (U) is not one of these four bases. Uracil is a nitrogenous base, but it is not found in DNA; instead, it is present in RNA, another vital nucleic acid in the body that works in conjunction with DNA to produce proteins. The base pairs in DNA are A-T (adenine - thymine) and G-C (guanine - cytosine), while in RNA, the base pairs are A-U (adenine - uracil) and G-C (guanine - cytosine).
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B. Warm water rises because it is less dense than cool water.
C. Pancake batter cooks quickly after being spooned onto a hot griddle.
D. Our atmosphere is constantly being heated by the sun.
Answer: D. Our atmosphere is constantly being heated by the sun.
Radiation is the transmission of energy in the form of waves or particles released by one source and absorbed by another source. Types of radiations includes electromagnetic radiation, particle radiation, acoustic radiations and gravitational radiations.
Our atmosphere is constantly being heated by the sun is the example of the radiation because the sun radiates energy in all directions in the form of heat, light and radiations. Solar energy in the form of radiation is either reflected back to the sun or it is absorbed by the earth atmosphere. Therefore, this causes heating up of the earth atmosphere.
If the water becomes contaminated by fertilizers, the biotic factors will not be survived properly in that water. Due to contamination, genetic changes and diseases can cause.
Biotic factors are those factors that are living or once living. The characteristics of biotic factors are growing and reproducing. These factors are plants, animals, fungi, bacteria, etc.
Fertilizers are chemicals that are used in plants and farming to increase the growth of crops and plants. These fertilizers, in the end, go into water bodies and contaminates them.
These fertilizers are not good for water, as animals drink this water and due to heavy chemicals, these fertilizers cause deformities in animals and plants.
Thus, The biotic factors in the water will not be able to survive effectively if it becomes tainted by fertilizers. Diseases and genetic alterations may result from pollution.
To learn more about biotic factors, refer to the link:
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B.ticks feeding off the blood of a deer who is then harmed
C.Hawaiian bobtail squid glowing because of the bacteria living in its belly
D.cattle egrets feeding off the insects kicked up by the cape buffalo