Declining methods part 3

Declining balance method

On what priciple are the following methods of separation based? Give on example of a mixture of the methods mentioned in which they are used. Solvent extraction method

Which of these methods is not part environmental pest control

Describe the following methods for determination of equivalent weight of a metal : (i) oxide formation method (ii) chloride formation method (iii) metal displacement method.

The declining phase of a population occurs when

Write the factors that have led to decline in the death rate.

Draw labelled diagrams of stable and declining age pyramids of human population.

The status ofa population, whether it is growing, stable, or declining is indicated by

Name a term used for gradual declining of activity of plant, leading to its death