Determine the vapor pressure of ethanol at . 90°c

? you expect us to answer this? ? this is your schoolwork, i don't think we can with this, i think it would considering being

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

i do not get it   at all