Desert
Source: This question is taken from the Everyday Science
both A and B
Dentistry
Helium
Breakbone Fever
Chemical
Clostridium
Latitude
optic disc
Effects tides of the ocean
Abid Hussain
Dobson
Eyes
ozone depletion
radio active gas
Stratosphere
Grapes
Virus
Pauli exclusion principle
Artificial Active
Bone Marrow
Thyroid gland
Arachnology
A and B
Composition and properties of matter
Quasars
12%
Spleen
Seasonal reversal of winds
Blood
Teflon
Cotton
ice sheet
Green vegetables
Biosphere
small intestine
Testa
Bone marrow
Second cranial nerve
Earthquakes
Riboflavin
Vitamin B-12