Answer:
Helium
Explanation:
Helium is extracted in a few places in the world, namely USA, Algeria, Russia and Qatar. Helium is abundant in space, where it's produced as a product of the fusion reaction inside stars such as the sun.
Answer:
Modern method of irrigation is Sprinkling, Subirrigation,intrasoil and salt leaching are the principal purposes of surface irrigation
Answer :The Cu ion is the metal.
• The copper (II) ion is the Cation
• The two chloride ions are the Anions
Explanation:
The first one with the boxing crab and anemone is mutualism.
The second one with the dog and flea is parasitism.
