Will give a brainlest widespread use of pesticides has led to the development of more pesticide-resistant insects a wider variety of pests a new species of pest more fertilizer-resistant crops

more pesticide-resistant insects

Pesticides are the chemical or biological formulations which are sprayed upon the plants being of high economic value to kill harmful insects and disease causing organisms such as bacteria, fungi and viruses.

Pesticide resistance can be defined as the decrease in susceptibility of pests population against a pesticide. This is because of the fact that the pest species evolve pesticide resistance through natural selection. The most resistant pest against the pesticide will survive and passes the trait to their offspring. Hence, the new generation of pest species becomes resistant to pesticides.  

i'm pretty sure it's spores