The amount of air that we inhale contains 21% of oxygen and 0.04% of carbon dioxide, while the air we breathe out contains 16.4% of oxygen and 4.4% of carbon dioxide.  It happens because inhaled Oxygen (O2) "consumed" in the processes of cellular respiration, releases energy, and gives out carbon ... Read More

Selective breeding, also known as artificial selection, is a process used by humans to develop new organisms with desirable characteristics. Breeders select two parents that have beneficial phenotypic traits to reproduce, yielding offspring with those desired traits.Example if a breeder wants cows that produce lots of milk or hen that produce ... Read More

KnittingKnitting is created with loops, or stitches, that run together for the entire project.  A knitter uses two knitting needles to create these loops. Knitted cloth can also be created with a knitting loom. The loom holds the yarns in places are the knitter moves the stitches between the loom pegs. These loops form ... Read More

Given: $ 18 \frac{12}{19}+23 \frac{18}{19}-15 \frac{14}{19} $ To do: Solve the expression Solution: To solve this problem we should know to convert mixed fraction into improper fraction.You can do it using the formulaImproper fraction = $\frac{Whole\ number \times Denominator + Numerator}{Denominator}$   Consider$18\frac{12}{19}$18121918 \frac{12}{19}Here Whole number = 18, Denominator = ... Read More

 Given :AD  =  6 cm ; AB = BC = CDTo Find : i) Perimeter of shaded regionii) Area of shaded regionSolution :AD  =  6 cm  ; AB = BC = CD$AD \ = \ AB + BC + CD$$AD \ = \ AB + AB + AB$$AD \ = \ ... Read More

Garbage is the unwanted waste that we produce. In order to keep our house and locality clean and sanitized, we need to properly dispose of Garbage. There are many ways of Disposing Garbage. This is known as Dealing with Garbage.

Given,2×35÷82×35÷8=2×358=354=8.752\times 35\div 8=2\times \frac{35}{8} =\frac{35}{4} =8.752×35÷8=2×835​=435​=8.75.

Curd and sour substances contain acids.These Acids react with metals to produce their respective salt and hydrogen gas. So, if such substances are kept in a copper container, the acid will react and the container will be corroded.

Vulgar Fraction:A vulgar fraction, common fraction or fraction all are same. They are fractions written in the usual way which is one number [integer] above another [integer] separated by a line. Examples of vulgar fraction are: $\frac{1}{2}, \frac{1}{3}, \frac{2}{5}, $etc.

Solution:Yes we can compare rational numbers with cross multiplication.In cross multiplication, multiply the numerator of the first fraction with the denominator of the second fraction and the numerator of the second fraction with the denominator of the first fraction.Suppose you want to compare the fractions frac{1}{3} + frac{2}{5}31​and52​. Multiply the numerator ... Read More