Some sources below.
No one cares
There are many vitamins out there that contain DHA Omega 3 as well as certain fish or fishoil. You can also get it from flaxseed, English walnuts and canola oil!
earths crust, radon gas, cosmic rays, natural sources e.g food, water and rocks.
Arizona was most known for its natural source of copper! But AZ has many natural resoures, of which do you want minerals, food sources, water, etc.?
Answer this question… A loss of potential sources of future medicines
The effects of upsetting natural habitats can be absolutely devastating to an animal population. These changes can disturb homes and food sources.
DHA -- Docosahexaenoic acid -- is an omega-3 fatty acid that you get in your food (fish, for example). DNA -- Deoxyribonucleic acid -- is the genetic material that defines all life.
the main rhythm of dhol. Dha Na Na Na Na, Dha Dha Na Dha Na Na Na Na
The relationship of economics to natural science is that natural sciences provide humans and computers data which relates to different areas such as food sources. Economics is not considered a natural science.
Dha is one of the syllable in the Javanese script.
Most background radiation comes from natural sources, while most artificial radiation, plants absorb radioactive materials from the soil and these pass up the food chain.