What are tears made of?
452773
Tears flow from our eyes when we cry because they contain chemicals and hormones produced by our bodies.\n\nWhen we become upset, our brains and bodies overreact and work overtime by producing chemicals and hormones.\n\nCrying helps eliminate these extra chemicals that we don't need.\n\nThe chemicals and hormones disappear from our body through the form of tears. As our tears flow, they sooth our sadness or distress by withdrawing these chemical agents.\n\nThat is why many people feel calmer or more refreshed after crying--because the tears get rid of these hormones that are produced when we are sad, happy, or distressed.
766132
Polymer is "poly"-"mer", which means "many units".\n\nThus a polymer is a molecule made from a bunch of smaller building block molecules.\n\nA fat is typically made of glycerol + 3 fatty acids.  Basically, it has 4 building blocks.  "4" isn't a big enough number to consider it to be many, especially compared to proteins.\n\nProteins are made of a set of ~20 different kinds amino acids in a long, specific sequence.  For example, one part of the hemoglobin protein has ~100's of amino acid units in it.  This puts the "many" in "poly".
1114247
One of the three most common and toughest protein fibers found in connective tissue of mammals (along with elastin and reticulin).  Protein (polymer of amino acids) formed by protein synthesis in the fibrocytes in these misc connective tissues; set up to be STRUCTURALLY very strong, usually in parallel rows, like in a tendon! It is hard to cut tendons with a knife! WHITE in color. Found in various concentrations in the other forms of connective tissue. It can give some strength to different forms of cartilage as well.
1111753
Most people will cry at some point in their lives. Emotion is energy, and energy can move in a variety of ways, be that physically, verbally, with sound, participating in sports, or fights with others, even sexually. But in order for the deepest most complete healing to take place, emotions must move in an emotional way. It doesn't get much more "emotional", natural, or visceral than crying.
6745
styrofoam i guess. \nlose three fingers?....ouch-ouch and ouch.
313997
There are two possible reasons for tears to be released when you yawn. \nThe tears are secreted by the "lacrimal glands" located just inside the eye \nlids next to the nose. These glands secrete the fluid into the "lacrimal bag" \nwhere it is then released through the "lacrimal ducts" into the lining of the \neye lids to keep the eye moist.\n\nWhen you yawn it is possible that there is pressure put on the "lacrimal \nbag" and some fluid is forced out. \n\nThe secretion of the "lacrimal glands" is under control of the autonomic \nnervous system. This nervous system controls all the involuntary functions \nas contrasted to the somatic nervous system that controls all purposeful \nactions. When you reach out to catch a ball it is the somatic system that \nactivates the muscles to acheive that action. The autonomic system \ncontrols such things as the heart beat, sweating and the function of the \nintestines.\n\nWhen the autonomic portion of the nerves are activated the "lacrimal \ngland" secretes the tears which appear at the eye. These nerves also \ncause the pupil of the eye to constrict and get small as well as to cause\nthe glands in the nose to secrete. So, when you are crying you get tears,\na watery nose and your pupils should constrict. Perhaps the act of \nyawning causes activation of these nerves. Next time you yawn look in \nthe mirror and see it your pupils get small. But don't get too close to the \nmirror because when you look at things close to you the pupils get smaller \nanyway.
3436
Tears drain away from each eye along two channels marked by a tiny opening at the inner edge of each lid. The channels lead to the lacrimal sac at the side of the nose, which is why your nose runs when you cry. Yawning exerts pressure on the lacrimal sac causing normal tearing.
48601
They are produced by our tear glands which are found in a region just above our eyes.  They are stimulated to secrete tears by feelings such as sadness.
206612
they are made of metal ^_^
1031749
Leather\n\n- from animal skins
85005
All matter is made up of atoms. God put atoms together to make everything.
114385
Wood fibers in the paper the tissue is made from.
614507
Depends on what is is made of.
790572
The eye's tears are composed of three layers:  oil, water and mucous.  The outermost oily layer is produced by the meibomian glands which line the edge of the eyelids.  The watery portion of the tear film is produced by the lacrimal gland.  This gland lies underneath the outer orbital rim bone, just below the eyebrow.  The mucous layer comes from microscopic goblet cells in the conjunctiva. With each blink, the eyelids sweep across the eye, spreading the tear film evenly across the surface.  The blinking motion of the eyelids forces the tears into tiny drains found at the inner corners of the upper and lower eyelids.  These drains are called puncta (plural for punctum).The tear film travels from the puncta into the upper and lower canaliculus, which empty into the lacrimal sac.  The lacrimal sac drains into the nasolacrimal duct which connects to the nasal passage.This the mechanism for tear internally.and external causing factor for tear is emotional change,dust ect there is no limit in litres.It may depends on how we affected by internal and external causing factor.
147839
Animal (origin) glue is made from connective tissue, found in hoofs, bones, tendons, ligaments, and cartilage in vertebrate animals. Horses are good since their hooves are bigger.
149887
I think "tears" shoud be the answer.
464069
Tears serve to wash dirt from the eyes and keep teh eyes healthy. The eyes must always be lubricated.