When it is winter, the United States receives the least direct solar energy, as compared with the rest of the year. Why does this happen?

The Northern Hemisphere is titled away from the sun

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