Term symbiosis refers to close and prolonged interaction between organisms of different species for the benefit of one or both organism. There are several types of symbiosis based on the relation of benefit between organisms. Different types of symbiosis are: • Commensalism • Parasitism • Mutualism • Endosymbiosis ... Read More

Given :The given expression is $2 -\frac{3}{5}$.To do :We have to find the value of the given expression.Solution :$2 -\frac{3}{5} $$2 -\frac{3}{5}= \frac{2 \times 5}{1 \times 5} - \frac{3}{5}$                $= \frac{10}{5}- \frac{3}{5}$                $=\frac{10-3}{5} = \frac{7}{5}$Therefore, the value of the given expression is $\frac{7}{5}$.        

The word prokaryote is derived from the Greek where "pro" means 'before' and "karyote" means the nucleus. Thus, prokaryote means a primitive type of nucleus.A prokaryote is a unicellular organism with a primitive type of nucleus. Prokaryotic cell lacks a membrane-bound nucleus, mitochondria, and any other membrane-bound organelle. Prokaryotes are ... Read More

Given:A and B together can do a piece of work in 10 days.A alone will take 12 days to finish the work in 12 daysTo do:  To find how long will B take to finish the same workSolution:This implies, Work is done by A and B together in 1 day=$\frac{1}{10}$A ... Read More

Given:Cost of transporting 160 Kilogram of Goods 125 kilometre is 60 rupees. Cost of transportation is directly proportional to the distance travelled and the weight of the Goods. To do: What will be the cost of transporting the 200 kilograms of goods for 400 Km.Solution:Therefore,   Cost of transporting 160 kg ... Read More

In the olden days, people used horses, bullock carts, etc to travel. There are many instances that people even walked large distances if they haven't found any means to travel.

Given :The given expressions are, 1. $ \sqrt{18} + \sqrt{32}$.2. $\sqrt{20} + \sqrt{45}$.To do :We have to simplify the given expressions.Solution :We know that, $b\sqrt{a} + c\sqrt{a} = (b+c)\sqrt{a}$1. $ \sqrt{18} + \sqrt{32}$ $ \sqrt{18} + \sqrt{32} = \sqrt{3 \times 3 \times 2} + \sqrt{4 \times 4 \times 2}$      ... Read More

Given: Kerosene has a density of 0.8/cm3 To find: We have to find the weight of 1 ml kerosene Solution: 1ml = 1 cm 3  We know that,$Weight = Density \times Volume$ = $0.8 \times 1$ = 0.8 gram weight

The speed with which man is approaching the mirror is the same speed his image approaches the mirror. An observer moves towards a stationary plane mirror at a speed of $v$ m/s speed, the speed at which his image moves towards the mirror is $v$ m/s.So, the speed with ... Read More

Adolescence: The period of life when the body undergoes changes leading to reproductive ability is called adolescence. In humans, adolescence starts at 11 years and lasts up to 19 years of age. Since this period covers the teens, i.e. 13 to 19 years, adolescence is also known as teens, and ... Read More