In which era did the first fish appear?

the Cambrian Period

Explanation:

a. they are both space stations

happy to

pls mark as brainliest.

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