Board game - Evolution. Grass and Mushrooms (expansion)

To play, the basic set "Evolution" is required. "Grass and Mushrooms" is the fourth expansion to the game "Evolution". What new rules does it introduce?
In the basic "Evolution", the origin and development of animal species began. In the "Time to... Fly" expansion, animals gained new traits; in the "Continents" expansion - they populated different continents. At the same time, they obtained food from an anonymous "food source". In the "Grass and Mushrooms" expansion, plants become an extremely unfriendly "food source". Every time an animal eats grass or a mushroom, it receives a portion of harmful substances along with the calories, which greatly affects its traits and can lead to death.
 Players need not only to feed their animals and protect them from poisoning but also to control the growth of flora. After all, now "grass and mushrooms" are a full-fledged player; they score points at the end of the game and can take any place and even win.