Question : The highest volume of gases in the lower atmosphere is comprised of

Option 1: Hydrogen

Option 2: Carbon dioxide

Option 3: Oxygen

Option 4: Nitrogen

Question : Vegetables and fruits should be a part of our diet because they stimulate:

Option 1: peristalsis

Option 2: salivation

Option 3: excretion

Option 4: respiration

Question : Which one out of the following helps in burning?

Option 1: Oxygen

Option 2: Carbon monoxide

Option 3: Nitrogen

Option 4: Carbon dioxide

Question : When the bread rises and bakes, __________creates thousands of bubbles in the dough.

Option 1: phosphorus

Option 2: nitrogen

Option 3: oxygen

Option 4: carbon dioxide

Question : Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of __________from the atmosphere.

Option 1: methane

Option 2: carbon dioxide

Option 3: nitrogen

Option 4: argon