Tutor profile: Aamir H.
Subject: Basic Chemistry
What is a covalent bond
Sharing of electrons between atoms
State the composition of blood
Blood consists of three main parts. First is plasma, this makes up 55% of blood. 5% is known as the cloudy layer and finally 45% is of hg
What are the 3 layers of the eyeball
Muscular layer (outer layer): Sclera and Cornea Vascular layer (middle layer and also known as Uvea): Choroid, Ciliary Body, Iris inner layer: Retina
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