Answer:
Option A, Offshore Drilling
Explanation:
In the process of offshore drilling, oil is extracted from the wells which are located at the surface of ocean floor.
Different types of oil rigs are used for oil extraction depending on the depth of the ocean.
It is a good mode of extracting oil from sources that have remained untapped since long. With the new technology, several nations have been able to explore this oil reserve and have become independent in terms of energy
Hence, option A is correct
Answer:
Nitrifying bacteria such as Nitrosomonas play an important role in providing nitrogen to plants and limiting carbon dioxide fixation. They are found widely distributed in soil or water, where there are large amounts of ammonia, such as lakes or streams into which treated and untreated sewage is pumped.
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Answer:
Evolution is an adjustment of the heritable attributes of natural populaces over progressive ages. These attributes are the outflows of qualities that are given from parent to posterity during generation. There are also three main types of evolution: divergent, convergent, and parallel evolution.
Explanation:
Answer:
Normal Cell vs Cancer Cell – The Key Differences
Normal Cell Cancer Cell
Cell shape Uniform Irregular
Nucleus Spheroid shape, single nucleus Irregular shape, multi-nucleation common
Chromatin Fine, evenly distributed Coarse, aggregated
Nucleolus Single, inconspicuous nucleolus Multiple, enlarged nucleoli
Explanation:
The correct answer is number 2. The reason is the carbonation in the soda water will eventually stop bubbling and therefore the water molecules will still exist.