Chemicals were first used to kill or ward off pests
A) thousands of years ago.
B) since the beginning of modern chemistry several hundred years ago.
C) about 70 years ago.
D) during World War II.
Correct Answer:
Verified
Q12: Natural organic pesticides are
A) extracted from plants.
B)
Q13: Which of the following is the most
Q14: Relying on natural predators to control pests
Q15: Crop rotation can be an effective alternative
Q16: Herbicides are pesticides that kill plants.
Q18: Mycorrhizal symbiosis reveals fungi to be more
Q19: Over _ pest species have so far
Q20: Humans use pesticides
A) because, like other organisms,
Q21: The parent material layer of a soil
Q22: Spaces between sand particles give sandy soil
A)
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents