<span>Genetic engineering because the genes of the plants were modified. </span>
Answer:
Correct answer is B
Explanation: I believe an Ecosystem is community of living organisms where non living systems of their environmental. Biotic and Abiotic components are together nutrient cycles and energy flows. There are types of Ecosystems such as Tundra, Desert, Cropland, and Rainforest..etc
Only the strongest live on to pass on their genes. the weak die