Name the substances responsible for permanent hardness

Name the substance responsible for the depletion of ozone layer.

Name the agranulocytes responsible for immune response of the body

Name the chemicals responsible for acid rain ?

Name Substances responsible for green house effect.

Which of the following substances cause permanent hardness of water

What are the causes for Permanent hardness

Name the organism responsible for sleeping sickness disease.

What chemical substances are responsible for the depletion of ozone layer ?

The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards the source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R. What is the general name of the chemical substance like P ? Name another substance which belongs to this class of chemical substances.

Name the substance used for drying ammonia.