I guess formal and informal refer to two types of essay - you can write a formal essay where you avoid conversational language and such and where you need to be very professional, or you can write informally where you don't have to think about such things, it is very casual.
it is foreshadowing since the clocks where seen in the beginning and then showed up later in the movie.
Answer: cleaver knife
Explanation: because, well first of all using a fork would be very inconvenient for cutting and carving wood, a razor knife is used as cutlery for eating so it would render useless or it would take hours to carve out wood
Answer:
B. in the Tian Shan, Vavilov had likely found the wild ancestors of the domesticated apple
Explanation:
The author most likely states that the wild apples growing in the Tian Shan looked like apples found at the local grocery store to support the point that in the Tian Shan, Vavilov had likely found the wild ancestors of the domesticated apple.
This is because, in the Tian Shan, Vavilov had discovered the wild ancestors of the domesticated apple which shows that they are similar to the apples in the local grocery store.