Agent orange has equal parts of 2, 4-D and 2, 4, 5-T and is found to contain highly poisonous chemical dioxin as impurities.

Correct Option: B

Agent orange has equal parts of 2, 4-D and 2, 4, 5-T and is found to contain highly poisonous chemical dioxin as impurities.

The top five crops are: Potato (which belongs to the family Solanaceae) and Wheat, Rice, Corn, Barley (which belongs to the family Poaceae).

Correct Option: C

The top five crops are: Potato (which belongs to the family Solanaceae) and Wheat, Rice, Corn, Barley (which belongs to the family Poaceae).

The long-term prospects for a truly human civilization depend in a large measure on control of human diseases.

Correct Option: D

The long-term prospects for a truly human civilization depend in a large measure on control of human diseases.

Suppression of reproduction of one type of organism by utilizing some features of its biology or physiology to destroy it or by use of another organism is known as biological control.

Correct Option: C

Suppression of reproduction of one type of organism by utilizing some features of its biology or physiology to destroy it or by use of another organism is known as biological control.

The rotenone is a natural insecticide with minimal or almost no side effects. It is an isoflavonoid extracted from the root of Derris.

Correct Option: D

The rotenone is a natural insecticide with minimal or almost no side effects. It is an isoflavonoid extracted from the root of Derris.