What is the biggest artery in the human body?

What is produced by photosynthesis?

The most common complex sugars in plants are:

Erythrocytes are:

The number of electrons and protons are the same.

How many bones does an adult human have?

Photosynthesis mostly occurs in which part of plants?

What’s the scale of the pH?

From where do plants get most of their nutrients?

Nucleotides are made of deoxyribose, phosphate group and one of the nitrogen containing base.