Question

Why the population of animals is decreasing day by day?​

Answer 1

Answer:

by the hunting of animals

Answer 2

Answer:

In the natural world, limiting factors like the availability of food, water, shelter, and space can change animal and plant populations. Other limiting factors, like competition for resources, predation, and disease also impact populations. ... Other changes in limiting factors can cause a population to decrease.

Also, human activities like poaching, hunting, cutting down forests for land etc. is also causing a lot of displacement in animal life. Environmental factors like air and water pollution also harm animals lower their life expectancy.