Watermeal (Wolffia sp.) holds the unique position as the world's smallest flowering plant. Watermeal is a member o…

In an aqueous environment, microscopic animals and plants are collectively known as plankton. Plankton which can do ph…

This is to increase the surface area of the intestine for absorption of the nutrients in the food. The lining of the s…

The atomic number of an element suggests the number of protons in the nucleus of that element. You know the number of …

http://clipart-library.com/  Short answer: You can slip, slide and fall. Detailed answer: Friction is a resisting force…

There are two factors that help stability to a moving bike. 1. its rotating wheels create angular momentum and 2. when …

When you heat a solid, you expect it to melt and when you boil water, you can be pretty certain that it will turn into …

Excessive ingestion of fluorides during early childhood may damage tooth-forming cells, leading to a defect in the ena…

When you hold a seashell up to your ear, you hear the quiet roar of waves crashing on a distant beach. This is because …

A spacesuit is a pressurized (filled with air pressure) garment worn by astronauts during spaceflights. It is designed…

Any gas introduced into a vacuum will be at a higher pressure than that vacuum. Gas expands until its outward pressure …

A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. For example, wa…

The shell of a chicken egg is made up of calcium carbonate. When an egg is soaked in vinegar for a long time, it start…

Pure iron is not suitable as an engineering material because it lacks sufficient strength and also rusts quickly. The …

Butylated hydroxyanisole (BHA) and Butylated hydroxytoluene (BHT) are antioxidants, which keep oil from going off. Oxy…

The two types of cells that exist in nature are prokaryotic and eukaryotic cells. Plant and animal cells both belong t…

The human scalp contains an average of about 100,000 individual hairs, each of which is approximately one-fifth of a m…

Hair develops from the cells of the hair bulb, which divide rapidly. The cells of the hair bulb move upwards as new ce…

A hair is a tube filled with cells and pigment with spaces in between. Normally, the spaces are filled with fluid and …

The human eye sees when light stimulates the sensitive cells on the retina. The retina is made up of ‘rods’ and ‘cones’…

The Milky Way is a flat spiral galaxy. It has four spiral arms radiating out of the central cluster of stars. Our sola…

The blind spot of the human eye is where the nerve endings of the photoreceptor cells covering the entire retina join …