Black in color; contains dense rock with very small, well-formed crystals. What rock is this plzz help me

Hornblende

Explanation:

I'm not sure if this is it but i think it is

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