In order to detect motion you must compare it to something that is not moving. This is called a

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )