Adenine, Cytosine, Guanine, and Thymine.
Answer:
Ice caps melting, increased heat causing droughts and wildfires
The right answer is the burning of fossil fuels.
While all these proposals have a bad impact on the biosphere, Proposal B is the only one that has a direct link to climate change.
Air pollution by combustion is an alteration of air quality that can be characterized by measurements of chemical, biological or physical pollutants present in the air, with consequences that are detrimental to human health, to living beings , climate, or material goods.
It appears that the same lifestyle factors that contribute to the development of Cerebrovascular disease also increase the risk for vascular dementia. Vascular dementia describes the problems with reasoning, planning, judgement, memory and other thought processes caused by brain damage from impaired blood flow in the brain.