I have 6 but here they are:
01.) Iron Deficiency
02.) Iodine Deficiency
03.) Vitamin B Deficiency
04.) Vitamin B12 Deficiency
05.) Calcium Deficiency
06.) Vitamin A Deficiency
Vertebrate Nervous Systems
<span>It replaces damaged cells
</span><span>
There are at least three primary functions that are performed by the epithelial tissue.Firstly it provides a great protective covering for all the tissues lying beneath it from radiation, toxins, physical trauma, desiccation and invasion of pathogens. Secondly it helps to regulate the exchange of chemicals between the body cavity and the tissues that lie underneath the epithelial tissues. It also helps in the secretion of the hormones in to the bloods. These are all major but primary functions of the epithelial tissues. From this we can easily understand the importance of the epithelial tissues.</span>
THe carbon gases generally the carbon dioxide gas and CFC's are called greenhouse gases which are referred to as toxic gases in the atmosphere. These gases contribute to the thinning of the ozone layer which can lead to the warming of the Earth since the ozone protectst the Earth from the heat and warmth of the sun
