Which one is part of the endocrine system?
a. sweat gland
b. tear gland
c. pituitary gland
d. all of the above

For the given question, the right option is option "D". The sweat gland, the tear gland and the pituitary gland are all part of the endocrine system. Some of the glands release their secretion in certain specific areas onlym while other glands release secretion for different types of purposes. The tear gland and the sweat gland are perfect examples of exocrine glands that release sweat through the skin and saliva in the mouth respectively. Endocrine glands are glands that are capable of releasing about 20 different types of hormones directly in the bloodstream.

It allows water to resist freezing and thawing cycle.

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the