In the early morning, the sky is blue and white clouds float.

Crows swept by, landing on the trunk of a withered tree in the corner of the prison playground, and a pair of red eyes looked through the glass window of the dining room at the crowd inside.

It seems that they are the prey, and they become predators.

When did the term 'food chain' first come about?

It was probably when human beings appeared, the first human beings mastered the laws of nature, and thus summed up the movement of the food chain

"Heavenly Film and Television: Starting from Taking Care of the Widows of Comrades-in-Arms" 407, Andy is blocked, he is my person! I am hitting it in my hand, please wait a moment,

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