True because <span>In ecology, a niche is a term describing the relational position of a species or population in its ecosystem to each other
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Answer:
The correct answer is c. smoking
Explanation:
Cigarette contains tobacco and it is identified that cigarette smoke has up to 7000 chemicals out of which 250 are poisonous and 70 chemicals are found to be carcinogenic.
Smoking is the main cause and greatest risk factor for bladder cancer. The person who smoke regularly are 3 times more prone to get bladder cancer than non-smokers. Smoking causes cancer in other organs and tissue like lungs, mouth, esophagus, throat, liver, pancreas, stomach, etc. Therefore the correct answer is c.
Both answers C and D are correct, however, answer D makes more sense.
<span>the answer is John Innes Centre</span>
