Lichens have symbiotic relationship between algae and fungus hence they are called as dual organisms. Lichens grow from the substrate of fungi in an algae environment. The algae and fungi are in mutual relationship where algae help to produce food and fungus help to absorb the nutrients. Lichens are of ... Read More

Thermometer an instrument for measuring and indicating temperature (how hot or cold something is). There are two types of thermometer which we use very commonly, they are:1. Oral and rectal thermometersIt is a narrow, concealed glass tube containing mercury. When the temperature rises or falls, the mercury expands or ... Read More

Fossil Fuel: These fuels are caused by the anaerobic decomposition of buried dead organisms a long ago. These fuels consist of natural gas, crude oil, coal, etc.

Given:$\frac{5}{8}$+$\frac{2}{7}$+$\frac{5}{8}$ To do: Evaluate the given expression. Solution: $\frac{5}{8}$+$\frac{2}{7}$+$\frac{5}{8}$ Taking LCM of 7 and 8, denominators of the fractions. LCM = $7 \times 8 = 56$ Making the fractions like fractions so that they can be added =$\frac{5\times7}{8\times7} +\frac{2\times8}{7\times8} + \frac{5\times7}{8\times7}$ =$\frac{35}{56} + \frac{16}{56} + \frac{35}{56}$ ... Read More

Dear Mehek, Plough, Hoe, and Cultivator are three important tools for soil preparation.Plough is used for ploughing. It is made of iron or wood. It is pulled by a pair of animals like cows or oxen or horses and operated by the farmer through the handle.  It has 3 important ... Read More

Substances which change their smell when mixed with acid or base are known as olfactory indicators. For example onion, vanilla, clove.Paste or juice of onion loses its smell when added with base. It does not change its smell with acid.

If we talk about a suitable climate for growing Jute. The suitable climate for growing jute is a warm and wet climate, which is offered by the monsoon climate during the fall season, immediately followed by summer. Temperatures ranging to more than 25°C  to 37°C and relative humidity of 70%–90% are ... Read More

Physical change is the change of that matter where only the appearance or molecular arrangement of matter changes without changing its composition.Chemical change: The change in which chemical properties of the matter change is known as chemical change. During a chemical reaction, the chemical bonds between the molecules are broken ... Read More

Commutative PropertyIn mathematics we deal with many operators like $+, -, \times$ etc. Some of the operations satisfy this property called Commutative property.We know $3 + 5 = 5 + 3$But $3 - 5$ is not equal to $5 - 3$This is because 'plus' operator(addition) satisfies Commutative property but 'minus' ... Read More

Hypotonic solution    Hypertonic solutionThe solution outside the cell has a lower solute concentration than inside the cell.The solution outside the cell has higher solute concentrated than inside the cell.The water molecules move inside the cell from outside. It is called as endosmosis.The water molecules move outside the cell from ... Read More