Chapter 15, Problem 39A

Summary Introduction

To discuss:

Two ways in which loss in biodiversity could affect humans.

Introduction:

Biodiversity is a variety of life in an area that is determined by the number of species living in that area. It helps in maintaining a healthy biosphere and provides direct and indirect value to humans. The biosphere supplies the basic needs for over six billion humans in the form of natural resources.

Answer to Problem 39A

Loss in biodiversity would result in:

1. Loss of natural resources
2. Pollution

Explanation of Solution

Some human activities have reduced biodiversity in ecosystems and this would have a lasting impact on the humans and the biosphere.

Loss in biodiversity would result in:

1. Loss of natural resources- Loss of biodiversity would result in loss of natural resources like trees, water, minerals, plants, animals, clean air etc. Because of the ever growing human population there is an increased demand for natural resources. A long term plan for their use and conservation is important. Conservation of resources includes reducing the consumption of resources, recycling resources and preserving ecosystems, as well as using them in a responsible manner.

1. Pollution- Forests are considered lungs of biosphere. With declining forest cover, the toxic gases and carbon dioxide levels in eth air would increase leading to global warming and other aspects of climate change. Pollution changes the composition of air, water and land. Biodiversity plays a major role in keeping the pollution levels under check.