The best way to increase validity of data in an experiment is by performing the experiment numerous times and obtaining measurements and data upon each run of the experiment.
Answer: Smallpox
Explanation: Small pox is an ancient disease which is caused by the Virus named as Variola virus. Early symptoms are fatigue and high fever.
The virus then after produces rash on faces arms and legs. The spots gets filled with fluid and pus and in later stages it turned into crust.
This crust eventually dried and falls off. It was fatal in almost 30% of the cases.
It eradicated by a collaborative global vaccination program which was led by WHO.
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<span>Many mutations do produce changes in phenotype,I</span>t helps the bodies of the species to re-adapt to more locations and habitats.
Answer:
The answer should be C.
An energy pyyramid shows how the energy "flows" from organism to organism as it goes up.