D) All the Above.
There are diseases that are carried from one person to another by sharing the same food, water and body fluids. If an infected person shares food with a non infected person the germs and bacteria that are present on his hands will carry the disease. There are several diseases that are water borne. These are spread through poor sewage systems or the water droplets in the air in which an infected person breathes. Body fluids can be the mucus from the nose of the flu, the spit of an infected person or sexual discharge that can cause STDs to a non infected person.
Answer:
Species
Explanation:
Boys and girls belong to the same species.
The type of species is Humans.
Answer: Option C
Explanation:
Protein building begins on the DNA strand. Usually, the DNA contains genetic information which flows from nucleic acids to proteins in a series of steps:
1) Replication: this is the first step. It involves the copying of parental DNA into daughter copies.
2) Transcription: this is the second step. Here, parts of the coded genetic message in DNA are copied precisely in the form of RNA - in the form of messenger RNA (mRNA).
3) Translation: this is the third step. Here, genetic message coded in mRNA is translated, on the ribosomes, into a protein with a specific sequence of amino acids.
Simply put, DNA makes RNA, and RNA makes protein.
Answer:
Humans have a variety of effects on the physical environment, including overcrowding, pollution, the use of fossil fuels, and deforestation. Climate change, soil erosion, poor air quality, and undrinkable water have all been driven by such changes.
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Answer:
b. they present different traits
Explanation:
they are diffrent because heterozygous isnt allways the same.
