'One problem with the growing population is the lack of fresh water'-Prove the accuracy of the statement.

‘Most plant hormones support growth’—Prove the accuracy of the statement.

One of the problems with the growing population is the destruction of forests. Discuss what could be the result of such deforestation recently. Evaluate the imporatance of biodiversity in preventing disease in human life.

Write down the effects of sound pollution on human health. Prove the accuracy of the statement-"Pollution decreases the plant biodiversity.

Evaluate the role of biodiversity in paper production and textile industry. One of the environmetal problems of the Sundarbans is the lack of fresh water-Analyze with example how it endangered biodiversity.

Disruption of the nitrogen cycle leads to acidification of under ground water, soil and waterbody-Judge the accuracy of the statement.

This question has statement I and II. Of the four choices given after the statements, choose the one that best describes the two statements. Statement - I : Addition of ethylene glycol to water lowers the freezing point of water, therefor, used as antifreeze substance. Statement -II : Ethylene glycol is soluble in water.

Consider the following four statements (A-D) related to the common frog Rana tigrina, and select the correct option stating which ones are true(T) and which ones are false(F). Statements : (a) On dry land it would die due to lack of O2 if its mouth is forcibly kept closed for a few days (b) it has four-chambered heart (c) On dry land it turns uricotelic from ureotelic (d) Its life-history is carried out in pond water

Growing more than one species of fish in the same water body is

Write three problems caused by ever increasing human population. Person may suffer from difference diseases due to air pollution-Write the names of one such diesase and state one symptom.

Explain how air sack helps pigeon in its evolution. 'Communication exchange and problem solving are two important behavioural adaptation-Prove the statements with approipriate example.