Last seen: Sep 30, 2021
Biological magnification: The increase in concentration of harmful chemical substances like pesticides in the body of living organisms at each trophic...
Yes, the impact of removing all the organisms in a trophic level will be different for different trophic levels. For example, on removing producers; h...
The food chain would end and ecological balance would be affected. If the herbivores are killed, then the carnivores would not be able to get food...
(d) All of the above
(b) Grass, goat and human
(i) Recycling: The solid wastes like paper, plastics and metals, etc. are recycled. (ii) Preparation of Compost: Biodegradable domestic wastes such ...
Ozone (O3) is an isotope of oxygen, i.e., it is a molecule formed by three atoms of oxygen. At the higher levels of the atmosphere, ozone performs a...
(i) They cause air, water and soil pollution. (ii) They may cause bio-magnification in the food chain and end up in humans.
(i) Biodegradable substances are decomposed by the action of microorganisms and decomposed materials are recycled through geo-chemical cycle. (ii) T...
The microorganism like bacteria and other decomposer organisms (called saprophytes) present in our environment are specific in their action. They brea...
(i) Decomposers help in decomposing the dead bodies of plants and animals and hence act as cleansing agents of the environment. (ii) Decomposers als...
Trophic Levels : The various steps in a food chain at which the transfer of food (or energy) takes place are called trophic levels. Example : A foo...
Some harmful effects of agricultural practices on the environment are as follows: Use of fertilisers change the chemistry of soil and kills useful...
The wastes generated daily are kitchen wastes, paper wastes like newspapers, bags, envelopes, plastic bags, vegetable and fruit peels, dust and empty ...
The flow of energy generally is as follows: Sun → Producers → Herbivores → Carnivores Since, flow is progressively from one trophic level to anoth...
(i) Use of cloth bags instead of plastic bags. (ii) Gardening. (iii) Harvesting of rainwater and preventing wastage of resources. (iv) Use of co...
An aquarium is an artificial and incomplete ecosystem compared to pond or lakes which are natural, self-sustaining and complete ecosystem where there ...
Crop fields are known as artificial ecosystems because they are man-made and some biotic and abiotic components are maintained, nourished and reaped b...
Advantages of cloth bags: They are made of biodegradable material. They can be recycled and reused. They do not pollute the environment. They a...