The second issue of Food Security is now published, and is free online. It documents some of the multiple causes of food insecurity.
Helium can be found in underground deposits in the earth. Helium can also be found in stars and other planets. The helium underground - and extracted from natural-gas - is a by-product of the natural radioactive decay of uranium, though is far too stable to be radioactive itself. It also occurs in very small amounts in the atmosphere.
The Sun is a big ball of gas and plasma. Most of the gas is hydrogen or helium, but there are also small amounts of other elements such as oxygen, carbon, nitrogen, magnesium and iron.Thereâs lots to discover on Sun|trek, so dive in and. start exploring here.We canât do your home work for you, but if you have a question about the Sun you can always.ost of the gas is hydrogen or helium, but there are also small amounts of other elements such as oxygen, carbon, nitrogen, magnesium and iron. Thereâs lots to discover on Sun|trek, so dive in and. start exploring here. We canât do your home work for you, but if you have a question about the Sun you can always.