What are the two surgical methods of contraception in human males and females respectively ?

Name two famous biologists who proposed the "Theories of Evolution".

Given below is a figure of the internal structure of an organelle found in plants cells. Study the figure and answer the following questions :

(i) Identify the organelle and name the physiological process that occurs in this organelle.

(ii) Label the guidelines 1 and 3 of the figure.

(iii) Write a well balanced equation for the above metabolic process.

Define Pollution