A group of cells performing together to achieve a specific function is termed a tissue.

Immortality is an ideal situation (which cannot be achieved) in which one overcomes or overpowers death and so lives forever.

Milk contains cholesterol.. Consumption of milk increases the calorie intake as it contains animal fats, while the diabetic patient requires less calorie intake, so the milk consumption increases the sugar level.Therefore toned milk should be preferred.

Because animals do not have hands... ha ha ha Let's be serious. It's due to adaptations, rather evolution.. along with the passage of time and increased need of the hands, man has transformed from chimpanzee to Homo Sapiens and converted his two legs into hands...in short it is an art of nature.