1. explain how do scientists
know what moon's crust is
made of?

Whent he people went to the moon they told them what it was

Explanation:

"Like the Earth, the Moon has layers. ... Scientists believe that the mantle of the Moon is largely composed of the minerals olivine, orthopyroxene and clinopyroxene. It's also believed to be more iron-rich than the Earth's mantle. The outermost layer of the Moon is called the crust, which extends down to a depth of 50 km."

Explanation:

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