Final answer:
The number of natural pesticides consumed daily is not specified, but natural pesticides encompass a variety of compounds derived from natural sources. Organic agriculture does allow some natural pesticides, but their safety can also be a concern for human health and the environment. (option d)
Step-by-step explanation:
The exact number of natural pesticides we consume each day isn't provided in the reference material or widely available in scientific literature, since it can vary based on diet, the types of food consumed, and how the food is produced. The term 'natural pesticides' refers to pesticides that are derived from natural sources, such as plants, bacteria, and certain minerals.
Despite organic agriculture's prohibition of most synthetic pesticides, the use of some naturally derived pesticides is allowed. It is crucial to understand that just because a pesticide is natural does not mean it's non-toxic, as some natural pesticides can also be harmful to both human health and the environment, including bees and other pollinators.
Since before 2000 BC, humans have utilized a variety of methods to protect their crops, including natural pesticides. With the evolution of synthetic chemical pesticides, the use of natural compounds like pyrethrum and rotenone continued, but was augmented by the development of more potent synthetic agents. The history of pesticide use shows a transition from natural to synthetic products, and now a growing awareness of the need for sustainable and safe pest management practices.
Hence, the answer is option d