Answer:
USA, Canada and the UK were one of the first world countries in developing, specially in the school system. They invented social studies in order to teach political science, history and geography so the students could have better understanding about the world around them.
Answer:
following rules of everywhere
Because it is unusual for the sun and the moon to cross
Answer:
Option D, A new food source outside its range of tolerance
Explanation:
Species gets distributed based on their ability to survive or thrive under a given environmental condition.
Basically, the factors which affect the survival of an species are only responsible for its distribution.
Food source outside the range of tolerance will not affect the survival as species nor will affect its health.
However, other factors such as climate, localized disease and change in food distribution pattern will affect the species distribution.
Hence, option D is correct
