List the two main propositions of Oparin and Haldane.

What are the two main parts of a plant?

Name two main gases of air.

Name the two main groups of diseases.

State the hypothesis of oparin and haldane about the primeval earth condition what do you understand by haldane's hot dilute soup? State its significance

List the main elements of animals husbandry.

List two causes of malnutrition.