Pretend you are a fisherman. You make a living catching fish and selling them to local restaurants. A geothermal power plant is going to be built using the same body of water that you use to fish. The builders of the plant do not wish to harm the local ecosystem and have come to ask you your advice. Which system - closed loop or open loop would you advise them to build? Why?

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

d. planting trees

the trees take in carbon to make oxygen.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.