Depends on how major or minor the errors are. If the errors are due to lack of knowledge then it isn't a sign of progress but if less errors are being made and they are small ones progress may be shown.
Answer:
Gliders, like other aeroplanes, fly by using ailerons, rudders, and elevators. Gliders are equipped with flaps to control fall speeds by boosting lift and producing drag. Many modern gliders also have airbrakes or spoilers, which obstruct airflow across the wing, raising drag and lowering lift.
The conflict between atticus and the mob is an person v. Society conflict.
Answer: Pythons are negatively affecting the local ecosystem.
Explanation:
Thousand of pythons are living in the Everglades, is just a fact.
Large rewards are being offered to capture and kill pythons, is also a statement. It's not a reason why pythons should be hunted, just a fact on what you'll get if you kill pythons. Of course... there is a reason why pythons should be hunted, but it is not stated here, so it's not the answer.
People who brought them here as pets created the problem. This isn't explaining the problem, just creating a scapegoat.
They were 5 apples, Marian collected 7 more. How much does he have in total?