pesticides- used by farmers to prevent pests eating their crops heavy metals – used in industry These types of pollutants affect organisms by a process called bioaccumulation. Here is one way pollutants can enter a foodchain. The pollutant is washed into rivers and lakes. It enters the foodchainby adhering to or being absorbed by producers.
People also ask
How do pesticides affect the food chain?
Pesticides and the Food Chain. Pesticides are chemicals designed to kill invertebrates, usually insects, which have become plant pests. Farmers and gardeners have been spraying their crops and flowers for years to protect them. Although effective they can have a disastrous effect on a habitat鈥檚 food web.
How do harmful chemicals enter the food chain?
Harmful chemicals get concentrated at every tropic level as they are nonbiodegradable and ultimately reach the topmost level- humans. Pesticides may enter the food chain by lot of ways The pesticides may get washed away from a field due to excessive rain to nearby water bodies or into soil.
What are pesticides and how do they work?
Pesticides are chemicals designed to kill invertebrates, usually insects, which have become plant pests. Farmers and gardeners have been spraying their crops and flowers for years to protect them.
How are birds of prey affected by pesticides?
At the top of the chain, the sparrowhawk may eat many poisoned birds and be affected in turn. In the 1960s, numbers of birds of prey in Britain began to decline drastically because of the use of pesticides called organochlorines.