I like taking science classes, and learning science is also a pleasure! When I study the biological chain, I understand that the biological chain is not a necklace, but an interdependent chain composed of animals and plants. The biological clock is not an alarm clock, but an invisible biological clock in your body; If you speak loudly again in space, no one else can hear you; I also learned a lot ... after learning these interesting knowledge, I can't wait to share it with my parents and test them by the way. Hey, learning is really an interesting thing!