<span>a. a natural resource and a major river</span>
The correct answer is - cyanobacteria.
The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.
A, in urban areas :)
Urban areas have bigger populations than rural ones and the Rocky Mountains have terrain that is difficult to settle on
Answer:
One of the main problems faced by people living in Dharavi is the increasing population.
Explanation:
The increasing population in Dharavi makes it really hard for the people who are already living in the slums, as slums, in general, have a lack of privacy and a lack of hygiene. There is a lack of privacy in slums because what they are living in is literally made out of waste, therefore, there is no security for people living their as well as their children. There is a lack of hygiene as there is not any clean water which leads to pests and diseases surrounding the area. This is why people get ill and badly sick as it is not very easy for the people living in Dharavi to get hold of medicines. So this is one of the main problems people face in Dharavi, as it is very important for all people to have a good and healthy lifestyle.
- hope that helped
