Answer:
benefits
Diversifying energy supply and reducing dependence on imported fuels.
Creating economic development and jobs in manufacturing, installation, and more.
drawbacks
Large areas of landfill are required
Hydroelectric power is generated from flowing water, which turns turbines and generates electricity
Explanation:
Here we can say that number of moles as well as pressure will remain same for the balloon
so here we can say by ideal gas equation

so here for constant pressure and constant number of moles we have


now by rearranging the equation we have


so final volume will be 0.89 liter
Because they are larger planets the gravitational pull is heavier and they attract more celestial bodies