Human spine

Human spineVertebrae are the 33 individual bones that interlock with each other to form the spinal column. The vertebrae are numbered and divided into regions: cervical, thoracic, lumbar, sacrum, and coccyx. Only the top 24 bones are moveable; the vertebrae of the sacrum and coccyx are fused.

Snow Moon, a New Year comet sighting and a lunar eclipse

Lunar eclipse
Lunar eclipse
What are your plans this weekend? For all you space lovers, get ready for an incredibly stellar weekend! From the evening of February 10 through the morning of February 11, 2017 there will be a series of 3 events all in one night: a Snow Moon, a New Year comet sighting and a lunar eclipse! Here’s what you need to know about this incredible event!

1. Snow Moon

The Snow Moon is a term for February’s full moon. It was named this because February is generally the month that has the highest amount of snowfall during the year. This year, the snow moon will rise at 5:33 p.m EST on Friday and set at 7:22 a.m. on Saturday. It shouldn’t be too hard to spot it in the sky.
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Rock cycle

This schematic diagram of the rock cycle shows the relationship between magma and sedimentary, metamorphic, and igneous rock

Rock  cycle
Rock cycle

There are three major types of rock: igneous, sedimentary, and metamorphic. The rock cycle is an important concept in geology which illustrates the relationships between these three types of rock, and magma. 
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The Rule of Three in Mathematics

rule-of-three-calculator-150x150The Rule of Three is a Mathematical Rule that allows you to solve problems based on proportions. By having three numbers: a, b, c, such that, ( a / b = c / x), (i.e., a: b :: c: x ) you can calculate the unknown number. The Rule of Three Calculator uses the Rule of Three method to calculate the unknown value immediately based on the proportion between two numbers and the third number.

The working of the Rule of Three Calculator can be expressed as follows:

Rule of Three Calculator

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