The research about Linnaeus helped us discover the similarities between different species.The fossils help us understand like taxonomy
Klinglers iron agar medium is used to find the enterobacteria which can ferment glucose , lactose and hydrogen Sulphide . They are H₂S producing bacteria .
This media have phenol red as an indicator. When the glucose is fermented to acid , the production of acid turn the indicator from red to yellow, but it is then reoxidised and turns red again . When lactose is fermented it produce large amount of acid , and turn indicator yellow . Hence the slant will become yellow.And combination of ferrous sulphate and sodium thiosulphate helps in detection of H₂S which produce black color at the butt .
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Chitin - part of insects hard body and part of fungus
Cellulose - part of plant cell walls
Pectin - also part of plant cell walls
It needs a C) host cell in order to reproduce
The answer to this question is A. A simple Google search will help you find the answer. But, straightforward. That's what he stated in the document he made as the third law. So, that's the answer. Period.