It's a formal communication channel
Answer:
Two hundred and fifty million years ago the landmasses of Earth were clustered into one supercontinent dubbed Pangea.
Explanation:
Hoped I helped - GOOD LUCK
The best answer choice for the definition of a topic sentence opposed to a main idea is going to be: C. A topic sentence is the central idea of a paragraph, while a main idea is the central idea of an entire text. I hope that answers your question.
