Fill in the blanks:
Oganisms that do not require oxygen for respiration are called............... .

Why do body cells require oxygen?

Explain the role of oxygen in respiration

Fill in the blanks : Flowers which do not open are called …….

Fill in the blanks: The plants which depend on the food produced by other plants are called................ .

Fill in the blanks with appropriate enzymes that are required for the following changes.

Fill in the blanks with 'no/not/nor' : You can ...... do it.

Fill in the blanks: The average weather taken over a long time is called __________.