Answer:
D. Calculate the variations in the potions of the star due to movement of Earth in its orbit
Answer: 0.5 mole Mg
Explanation: solution:
12 g Mg x 1 mole Mg / 24 g Mg
= 0.5 mole Mg
Energy is "lost" at each trophic level when you go up the chain. <span> Typically there are fewer organisms at higher trophic levels.
Hope this helps!</span>
