7.2. ENVIRONMENT — DEFINITION AND FUNCTIONS

Environment is defined as the total planetary inheritance and the totality of all resources. It includes all the biotic and abiotic factors that influence each other. While all living elements — the birds, animals, and plants, forests, fisheries, etc. — are biotic elements, abiotic elements include air, water, land, etc. Rocks and sunlight are examples of abiotic elements of the environment. A study of the environment then calls for a study of the inter-relationship between these biotic and abiotic components.

The environment is everything that surrounds us, both living (biotic) and non-living (abiotic). Biotic factors include all forms of life, such as animals and plants, which interact with each other. For instance, trees provide oxygen and food for animals. Abiotic factors like air, water, and sunlight are essential for those living things. Understanding the environment means understanding how these two types of factors interact and influence each other. For example, plants (biotic) need sunlight and water (abiotic) to grow.

Think of the environment as a giant web. Each thread of the web represents a different component, like animals, plants, air, and water. If one thread breaks (like if we pollute the water), it affects all the other threads (the plants and animals that depend on that water).

The environment performs four vital functions: (i) it supplies resources: resources here include both renewable and non-renewable resources. Renewable resources are those which can be used without the possibility of the resource becoming depleted or exhausted, e.g., trees in the forests and fishes in the ocean. Non-renewable resources, on the other hand, are those which get exhausted with extraction and use, e.g., fossil fuel (ii) it assimilates waste, (iii) it sustains life by providing genetic and bio diversity, and (iv) it also provides aesthetic services like scenery, etc.

The environment has several crucial roles: it provides resources necessary for survival (like water, food, and materials), it can take in and reduce waste (like how trees filter air), it supports life by maintaining biodiversity (a variety of living things helps our ecosystems stay healthy), and it offers beauty (scenery we enjoy). Resources can be renewable (like forests, which can regrow) or non-renewable (like coal or oil, which can run out). By understanding these functions, we realize the importance of protecting our environment.

Consider a local pond as a small environment. The pond supplies fish (a renewable resource), absorbs waste from plants and animals (assimilating waste), hosts various species (biodiversity), and provides a pleasant view for people (aesthetic service). If we overfish (deplete the renewable resource) or pollute the pond, we affect all its functions.

The environment, left to itself, can continue to support life for millions of years. The single most unstable and potentially disruptive element in the scheme is the human species. Human beings, with modern technology, have the capacity to bring about, intentionally or unintentionally, far-reaching and irreversible changes in the environment. These functions is within its carrying capacity. This implies that the resource extraction is not above the rate of regeneration of the resource and the wastes generated are within the assimilating capacity of the environment.

Humans have a unique ability to impact the environment significantly. Our actions can disrupt natural processes, leading to irreversible changes, such as habitat destruction or climate change. When we extract resources too quickly or produce waste beyond what the environment can handle, we exceed its carrying capacity, which can lead to crises like resource depletion and environmental degradation. Thus, it is vital to manage our consumption and waste to ensure the environment can continue to support life.

Imagine a farmer who grows crops. If they harvest too much without letting the soil recover (regeneration), they'll eventually deplete the soil’s nutrients. It’s like trying to take all the money out of a bank account without making any deposits; eventually, the account will be empty.

When this is not so, the environment fails to perform its third vital function of life sustenance, and this results in an environmental crisis. This is the situation today all over the world. The rising population of the developing countries and the affluent consumption and production standards of the developed world have placed a huge stress on the environment in terms of its first two functions...

When we push the environment beyond its limits, it can no longer support life as effectively. This leads to dire consequences, such as loss of species, polluted water, and climate change. Globally, population growth in developing nations, along with high consumption in developed countries, overwhelms the environment's ability to provide resources and assimilate waste, creating an urgent environmental crisis. We face problems like increased pollution and resource depletion if we don’t change our consumption patterns.

Think of the environment like a sponge. If you keep pouring water (waste and consumption) onto a sponge (the environment), it has a limit on how much it can soak up. Once it’s full, the excess spills over (pollution and resource loss), creating a mess that is hard to clean up.

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