What things do humans do in the flower garden that alter the biotic elements of the ecosystem? What effects do they have on biodiversity?

Humans often use pesticides to destroy undesirable organisms that live in flower gardens, such as insects, weeds, or fungi. The use of such chemicals will reduce biodiversity. Humans also plant many of the same plants in gardens, which reduces biodiversity.

i do not know and i have a 100 in this class