Bioarchaeology- is the study of the biology of ancient times through archaeological materials, which focuses mainly on the human skeletal biology, mortuary archaeology,  and the archaeological record to answer questions about the lives and lifestyles of past populations.

Guard cells are specialized plant cells in the epidermis of leaves, stems and other organs that are used to control gas exchange. They are produced in pairs with a gap between them that forms a stomatal pore and helps to regulate CO2 and the rate of transpiration by opening and closing ... Read More

Given :The given term is 25 m.To find :We have to find what percent of 25 m is 500 cm.Solution :The required percentage $= \frac{500 cm}{25}\times100 cm \times 100$%                                              $= \frac{5}{25} \times 100$%                                              $= \frac{1}{5} \times 100$%                                              $= 20$%.Therefore, 500 cm is 20% of 25 m. 

To do:Divide the sum of $\frac{12}{5} $ and $ \frac{13}{7} $ by the product of $ \frac{-4}{7} $ and $\frac{-1}{2} $Solution: Sum of  $\frac{12}{5} $ and $ \frac{13}{7} $= $\frac{12}{5} $ + $ \frac{13}{7} $= $\frac{12\times7}{5\times7} + \frac{13\times5}{7\times5}$= $\frac{84}{35} + \frac{65}{35}$ = $\frac{84+65}{35}$= $\frac{149}{35}$ Product of $ \frac{-4}{7} $ and ... Read More

To do: Find the number whose 16% is 36Solution: Let the number be $x$$x \times 16% = 36$ $x\times \frac{16}{100} = 36$  $x = 36 \times \frac{100}{16}$ = $225$Therefore, the number is 225

Decimal Fraction: A decimal fraction is a fraction where the denominator is a power of ten (such as 10, 100, 1000, etc). You can write decimal fractions with a decimal point (and no denominator), which make it easier to do calculations like addition and multiplication on fractions. Eg: $\frac{4}{10}, \frac{13}{1000}$, etc.

When a magnet goes near a special kind of metal or other magnets, and the poles (sides) touching are opposite, it will pull, or attract the other metal or magnet closer.Also, if the two poles are the same, the two magnets will push away, or repel, from each other. This is ... Read More

Tissues are groups of cells in multicellular organisms that consist of structurally and functionally similar cells. Organs are formed by grouping together of multiple tissues according to their function.There are 'four' different types of tissues found in animal: 1. Connective Tissue2. Muscle Tissue3. Nervous Tissue, and 4. Epithelial TissueThere are 'three' different types of ... Read More

Bacteria are microscopic living organisms, usually single-celled, that can be found everywhere.They are a few micrometres in length.Bacteria are classified into 5 groups according to their basic shapes: spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios), or corkscrew (spirochaetes). They can exist as single cells, in pairs, chains or clusters.They ... Read More

Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion.They are the energy that travels through the Earth's layers and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic ... Read More