Answer:
The study of DNA started much before the discoveries of Rosalind Franklin and Maurice Wilkins. Nucleus of cell was discovered by Robert Brown in 1831 but the material present inside the nucleus called "nuclein" (DNA) came from the studies of Johann Friedrich Miescher in 1869.
Explanation:
Environmental change has to do with any kind of alteration that occurs in the natural environment.
<h3>What is environmental change?</h3>
The term environmental change has to do with any kind of alteration that occurs in the natural environment. These changes may be caused by a lot of factors and they may lead to changes in the kind organism that are found in the habitat.
Thus, the types of environmental changes demonstrated are;
African elephants have been hunted to near extension to obtain ivory - Human exploitation
The eruption of Mount Saint Helens destroyed some populations of conifers - Natural disaster
An infection with fungus reduced the population of the North Africa elm trees - Diseases
Increasing global temperatures have affected the migration patterns of humpback whales - Climate change
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C. Forest fires
because it destroys habitat and ecosystems
there is also loss of wildlife.
Biochemical control and toxicity after intensity-modulated radiation therapy for prostate cancer. ... Biochemicalfailure was defined as PSA < post-treatment nadir+2.