I’d go with Physical geography.
Also known as geosystems, physical geography is one of the two major sub-fields of geography. It is part of the geographical study that focuses on examining landforms, soils, and water bodies. It also deals with the study of patterns in the natural environment such as, biosphere, geosphere, and hydrosphere.
Trash pollution like plastic can impact aquatic organisms, they can swallow the plastic which can kill them if not treated right away, other trash pollution like oils can make the aquatic organisms sick. Some pollutants can also affect the mother's milk when it comes time to feed their young, Lots of pollutions can make the animals sick very sick and they can't fight the virus so they ended up dying putting their species at risk of extinction.
Air pollutants can affect the birds, they are breathing in toxic airs from factories and that can kill them too or make them sick.
Pollutions are very bad for aquatic life and wildlife, we have to make sure we keep this planet clean or else we will die out too like the animals
hope this helped :)
Have a great day
B) India has an especially high overall population. It's right after China when it comes to population, and it has over a billion people. Using a little math, even if you have a large Muslim population but over a billion people in your country, the percent of Indian Muslims will be small.