Answer:
Big Year and the Great Backyard Bird Count are similar in many ways. Both Big Year and the Great Backyard Bird Count happen annually Extra! Extra! Backyard Birding says, "While not as long as a "Big Year," the "Great Backyard Bird Count" happens every year." Not to forget that both activities involve watching birds.
Explanation:
Answer: Hidden, invisible, and unseen
Explanation: Good luck!!
Answer:
The first author writes for children, but the second author writes for teachers