Are zebras black with white stripes or white with black stripes?

Many zoologists would say that a zebra is white because its stripes end towards the belly and the belly is mostly white. Others would say that a zebra is black because if you shaved all the fur off a zebra the skin is mostly black. So it really depends on how you want to look at it.

@askmenow

How long does it take for caffeine to take effect?

It only takes 45 minutes for 99% of the caffeine to be absorbed through these membranes. In humans the half-life for caffeine is anywhere from 2.5 to 4.5 hours, which explains why the average energy drink or coffee's effect lasts about 2 to 3 hours.

@askmenow

How many miles is a nautical knot?

It is slightly more than a statute (land measured) mile (1 nautical mile = 1.1508 statute miles ). Nautical miles are used for charting and navigating. A knot is one nautical mile per hour (1 knot = 1.15 miles per hour ).

@askmenow

Why do mosquito bites itch?

While bees and wasps inject venom when they sting, mosquitoes simply bite to feed on your blood. The bumps and itchiness that follow come from an anticoagulant that the mosquito injects to prevent your blood from clotting, which triggers a mild allergic reaction that includes the typical round, red bumps.

@askmenow

How do fish get oxygen out of water?

Gills are feathery organs full of blood vessels. A fish breathes by taking water into its mouth and forcing it out through the gill passages. As water passes over the thin walls of the gills, dissolved oxygen moves into the blood and travels to the fish's cells.

@askmenow

How long does it take for food to pass through the digestive system?

Digestion time varies between individuals and between men and women. After you eat, it takes about six to eight hours for food to pass through your stomach and small intestine. Food then enters your large intestine (colon) for further digestion, absorption of water and, finally, elimination of undigested food.

@askmenow

Are potato skins healthy?

Potato skin contains B vitamins, vitamin C, iron, calcium, potassium and other nutrients. Potato skin also provides lots of fiber, about 2 grams per ounce. If you eat a medium baked potato, including the skin, you'll get nearly 4 grams of fiber, 2 milligrams of iron and 926 grams of potassium.

@askmenow

What are our five senses?

The nervous system has a specific sensory system or organ, dedicated to each sense. Humans have a multitude of senses. Sight (ophthalmoception), hearing (audioception), taste (gustaoception), smell (olfacoception or olfacception), and touch (tactioception) are the five traditionally recognized.

@askmenow

What organs can regenerate themselves?

The liver is the only human internal organ capable of natural regeneration of lost tissue; as little as 25% of a liver can regenerate into a whole liver. Regeneration is very rapid. The liver will return to a normal size in one to two weeks following the removal of greater than 50% of the liver by mass.

@askmenow

What color is an insect's blood?

Insect blood, which is called hemolymph, contains various nutrients, hormones, and other things, but does not have any red blood cells or hemoglobin. That is why it is not red in color, and instead is rather clear.

@askmenow