Question

What factors lead to decline in biodiversity?
A. Acid rain
B. Pollution
C. Population
D. All of the above

Answer 1

Biodiversity provides the eco system which supplies oxygen, clean water, wastewater treatment, pest control and participates in many ecosystem services. Recreation is done by biodiversity like bird watching, hiking, and camping. This biodiversity is classified by three types. They are ecosystem diversity, species diversity and species diversity.

Complete answer:
Option D: Biodiversity changes are caused by the land occupying, pollution increase, concentration of oxygen and carbon changes, modified nitrogen cycle. These changes may result in acid rain and climate alterations. Population is the major reason for the decline in biodiversity. So acid rain, population and pollution are the declining factors of biodiversity.
So option D all of the above is the correct answer.
Option A: At the lower pH level and higher aluminum concentration water diversity will be damaged. It may lead to acid rain and it damages small fish and other aquatic animals. At pH level lower in five then the egg will not hatch and at low pH adult fish will die.
So option A is not the correct answer.
Option B: Pollution is also the other factor of decline biodiversity. Pollution is caused by humans. Air, water, land, and noise are the common pollution on earth. So all of them are part of the Ecosystem. If anyone is damaged then it will reduce biodiversity.
So option B is not the correct answer.
Option C: Population results in reduction in forest area, leads to pollution and destroys the natural sources. So it is also a declining factor of biodiversity.
So option C is not the correct answer.

Note:
Rise in population may increase the usage of natural resources. So it majorly destroys biodiversity. It also increases the number of factories. So the chemical concentration in the atmosphere will be increased. It may leads to acid rain and serious health problems. Exotic species will die because of reduce in biodiversity. Biodiversity is an important thing in maintaining the level of the ecosystem.