All the magnets have north and south poles. Opposite or unlike poles are attracted to each other, while the same or like poles repel each other. When you rub a piece of iron with a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The ... Read More

Tundra is a type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra is derived from the Russian word meaning "uplands", "treeless mountain tract".Tundra is known for large stretches of bare ground, rocks, and the vegetation that is composed of dwarf ... Read More

Given: John does $\frac{1}{2}$ piece of work in 3 hoursJoe does $\frac{1}{4}$ of the remaining work in 1 hour and George finishes remaining work in 5 hours To do: Find how long would it take three of them if they work together Solution: John does $\frac{1}{2}$ piece of ... Read More

Enzymes are the catalyst or biological polymers that can catalyze a biochemical reaction. Digestive enzymes break down polymeric molecules into smaller building blocks. Three examples of enzymes involved in digestion are: 1.Amylase: Amylase breaks starch into small carbohydrate molecules.2.Protease: This enzyme breaks down protein into amino acids.3.Lipase: Lipase enzyme breaks ... Read More

Given: $6 x+\frac{2}{5}=4-2 x $To do: Solve the following and check.Solution: $6x + \frac{2}{5} = 4 - 2x$$6x+2x=4-\frac{2}{5}$$8x=\frac{5\times4-2}{5}$$8x=\frac{20-2}{5}$$8x=\frac{18}{5}$$x= \frac{18}{5\times8}$$x=\frac{9}{20}$So, the value of $x$ is $\frac{9}{20}$  Checking LHS = $6x +\frac{2}{5}$        = $6\times\frac{9}{20} + \frac{2}{5}$        =$\frac{54}{20} + \frac{8}{20}$        = $\frac{62}{20} = \frac{31}{10}$RHS = $4 - ... Read More

Birds bodies are made to fly. They have light bones, strong legs, and specially shaped wings. Birds fly because it helps birds get away from animals that want to eat them and makes them better hunters. Flying also helps them to migrate from cold places to warm places in Winter.Read More

The human digestive system comprises a group of organs that digest and convert food into energy for the body. The digestive system is made up of the gastrointestinal tract also known as an alimentary canal which includes the mouth, stomach, oesophagus, small intestine, and large intestine.The accessory organs of the ... Read More

Fungi (singular: fungus) is a group of multicellular eukaryotic, non-phototrophic, or heterotrophic(cannot make their own food) organisms with rigid cell walls that are due to large amounts of chitin (a structural component only found in the cell walls of fungi).  Some fungi are unicellular (single-celled), while others are multicellular. Single-celled ... Read More

As a baby, a human has 20 teeth, and as an adult, he/she should have 32 teeth. Among the 32 teeth, each has its own function in the chewing and eating process. Adult teeth include four types of teeth: 1. Incisors (8 total): The middlemost four front teeth on ... Read More

The only reason why people don't wear silk is that they can't afford them.Silk is a very expensive fabric and so everyone can't afford it.