Answer: a. True
Explanation: These postulates were formulated by Robert Koch as a result of his experiments with healthy and infected mice. The postulates are often used to determine if a phatogen causes a disease. These are:
- The pathogen must be present in sick individuals but not in healthy ones.
- The pathogen must be isolated from individuals and cultivated in a pure culture.
- The pathogen cultivated must cause sickness when it's injected in suceptible inviduals.
- The pathogen must be isolated from the injected individuals and must be exactly as the first one.
Peak oil affects the lifestyle of organisms to a major extent. It is directly to the overproduction of higher levels of toxic compounds when ingested by organisms through air leads to problems like respiratory damage, cancer risk, liver damage, reproductive threat, etc.
<h3>What is Peak oil?</h3>
Peak oil may be defined as the speculative point in time when the global production of oil acquires its maximum rate.
The steps that should be taken to avoid energy shortages in a post-peak -oil future are as follows:
- Increase the dependency on solar energy.
- Limit the use of non-renewable sources of energy.
- Save major aspects of energy for the future.
- Conserve and plant more trees.
- Individuals need to make good habits of the utilization of energy-saving components and appliances that consume very less energy.
Therefore, it is well described above.
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Answer:
Phoebus Levene.
Explanation:
Two types of nucleic acids are DNA and RNA. The monomers of mucleic acid contains the pentose sugar, nitrogenous bases and the phosphate group attached with the bases.
Friedrich Miescher was the first scientists who discovered the nucleic acids. He identified the nucleic acids from the bandage that contains the nuclei of white blood cells. The new compounds discovered is known as nucleic acid. But the monomers of the nucleic acids was first explained by Phoebus Levene. Different forms of nucleic acid was also postulated by Phoebus Levene.
Thus, the answer is Phoebus Levene.
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