The 2019 Fujian Province High School Entrance Examination Biology test paper and analysis are as follows: Which chapter is the most important in the biology textbook of the People's Education Press? The answer was the ecosystem. What are the stages of biological evolution? The answer was the directed evolution stage, the natural selection stage, and the survival of the fittest stage. What are the impacts of humans on the ecosystem? Answer: The impacts of human activities on the ecosystem include pollution, destruction, disturbance, etc. 4. What methods can creatures use to transmit information? The answer was to pass genes, pollen, and information through the food chain. How fast is the speed of biological evolution? Answer: The speed of biological evolution is very slow. It takes millions of years to complete the formation of a species. What is the meaning of the ecosystem's biological variety? Answer: The ecosystem's biological variety refers to the number, type, structure, and distribution of various biological species in the ecosystem. What are the impacts of human activities on the ecosystem? Answer: The impacts of human activities on the ecosystem include pollution, destruction, disturbance, etc. What does self-regulation in an ecosystem mean? Answer: Self-regulation in the ecosystem refers to the organisms in the ecosystem maintaining the stability and balance of the ecosystem through mutual restraint and dependence. What are the methods of biological classification? Answer: The methods of biological classification include the characteristics, functions, origins, kinship, and other aspects of the species. What are the nutrients in the ecosystem? Answer: The nutrients in the ecosystem include water, air, soil, and food.