Reference
epub |eng | 2019-04-23 | Author:Sandra Choron, Harry Choron

( Category: Reference March 26,2020 )
epub |eng | 2012-03-14 | Author:Britannica Educational Publishing

The crater-scarred surface of Hyperion, a major moon of Saturn, appears in an image taken by the Cassini spacecraft. Hyperion’s interior may be a loose collection of ice blocks interspersed ...
( Category: Astronomy March 25,2020 )
epub |eng | 2019-02-09 | Author:Alec Bromcie

Properties of Oxygen • Colorless, tasteless, odorless, highly reactive; essential for all aerobic respiration and almost all combustion. • Commonest element in the Earth’s crust. • There are often only ...
( Category: Satire March 17,2020 )
epub, pdf |eng | 2019-08-21 | Author:Dean Burnett

That’s how the stress–vulnerability model works: it considers how much stress you’re dealing with, combined with how much stress you can cope with. Both are crucial in whether or not ...
( Category: Reference March 8,2020 )
epub |eng | 2018-08-12 | Author:Discovery

ROBOTS ARE COOL, BUT A LIGHT SABER WOULD BE AMAZING … Well, the military has been thinking the same thing. The armed forces have been working with lithium-ion battery, technology-powered ...
( Category: Reference January 12,2020 )