It took 10 years to build the panama canal :)
Separation of powers is a doctrine of constitutional law under which the three branches of government (executive, legislative, and judicial) are kept separate. This is also known as the system of checks and balances, because each branch is given certain powers so as to check and balance the other branches.
Deforestation is caused which means that they are being cleared faster than they can grow back. this problem can be fixed if less growth would happen around forests, this problem could be fixed if there were to be more trees planted.
Answer:
B. Microscope
This is because like a telescope is used by an astronomer, a biologist uses a microscope.
