In human body there are_________________kinds of bones
Melanoma (skin cancer) is associated with ______________
The earth’s atmosphere is divided into layers based on the vertical profile of __________
The temperature at which water boils depends mainly on ____________
A term biotype means ___________
Barnacles growing on the back of whale is an example for ________________
Fine organic or inorganic particles suspended in air is called _______________
Fog that most often forms as warm rain falls into a cold layer of surface air is called ______________
When oil and gas resources are burnt they kill many forests and lakes by ________________
The species that flower are called ______________
