Which of the following is the best method to dispose of biological wastes from hospitals?

If the energy transferred to a tertiary consumer in a food chain is 10 J, how much energy was available to the primary consumer?

In addition to wheat plants, a crop field ecosystem has organisms such as snake, peacock, eagle and mice. If the wheat plants are sprayed with pesticides periodically, which of the following will have the minimum concentration of pesticides in the body?

In an ecosystem:

(i) The flow of energy is unidirectional

(ii) The flow of materials is unidirectional

(iii) The flow of materials is cyclic

(iv) The flow of energy is cyclic

The ten per cent law is associated with