Questions

The most number of countries are in the continent Africa. Eventhough, Asia is the biggest continent in its size, Africa is the continent with 54 countries whereas Asia have 48 countries.

Physical signs of stress include Frequent colds and infections, aches, pains and tense muscles, stomach upset, loss of sexual desire, etc...

Enzymes in the body are those which play an important role of breaking down the larger molecules to small and speeds up the chemical reactions.

Pollen is a male plant gamete. When microspores produced after meiosis process on microsporangia of male gametophyte undergo mitosis and forms pollen grains.