Answer:
Having kidney disease wearing protective clothing and sunscreen when outdoors
Explanation:
In principle, vitamin D deficiency is caused by reduced skin exposure to the sun, because this vitamin is synthesized with an enzyme precursor by the sun action. People who have kidney failure may also have this deficiency because its absorption is difficult for these patients.The skin of people who use excess sunscreen form less vitamin D.
1. Griffith in his experiment used two related strains of bacteria (Streptococcus pneumonia), known as R and S and mice, trying to develop a vaccine against pneumonia. R strain-formed nonvirulent, rough-edged colonies
S strain- rounded and smooth colonies, with sugar protection coat, virulent
Mice that were injected with S strain developed pneumonia and died.
But, when mice were injected with heat-killed S strain it did not cause disease in mice.
The next part of experiment is the injection of combined harmless R bacteria with harmless heat-killed S bacteria. The result was that the mouse developed pnenumonia and in blood sample from the dead mouse, living S bacteria were found.
2. From his experiment, Griffith concluded that injected together, R strain and S strain bacteria most likely “communicate”. The R-strain bacteria took "transforming principle" (we know today that this is genetic material DNA) from the heat-killed S bacteria which allowed them to "transform" into virulent bacteria.
they both need other things to survive. the grape vine needs water sunlight and air. mosquitos need other living organisms
Therefore, it takes 40 sec to perform the work.
Answer: pretty sure its haploid cells
Explanation:
