What is the biological knowledge described in the following proverbs? The mantis catches the cicada and the yellowbird is behind, and the orange crosses Huaibei, so it collapses thousands of miles in

What is the biological knowledge described in the following proverbs? The mantis catches the cicada and the yellowbird is behind, and the orange crosses Huaibei, so it collapses thousands of miles in the ant nest. 1. "The mantis catches the cicada, and the yellowbird is behind" is a food chain: plants-cicadas-mantis-yellowbird (the short line should be an arrow with four trophic levels, and the four organisms are divided into one, two, three and four trophic levels). The knowledge described in this food chain is closer to saying that there is a predatory relationship between organisms; Farther away, it is to adjust the interspecific relationship by predation to maintain the stability of the ecosystem.

2. "Oranges crossing Huaibei into oranges" means that dried tangerines will become oranges when they cross the north of Huaihe River. This sentence should contain the knowledge of variation (oranges and bitter oranges belong to a family in plant taxonomy, not a genus), which shows the influence of environment on organisms.

3. "Collapsed in an ant's nest thousands of miles away" means that ants secrete a substance called formic acid when digging a hole, which is very acidic and corrosive. Even cement will be corroded, which may lead to the loosening of the original building. The ant nest itself is also very complex, with many channels, which leads to greater pressure under the relative area. The combination of these two reasons will lead to dam collapse. This mainly includes that organisms can adapt to the environment and transform the environment at the same time (it can also be said that organisms can have an impact on the environment, which is just the opposite of the view that "oranges surpass Huaibei and become bitter oranges").