How has the farming industry been affected by the use of fossil fuels?

fossil fuels have decreased the variety of crops harvested.

fossil fuels have increased the amount of crops harvested.

fossil fuels have led to a decrease in the size of farms.

fossil fuels have led to an increase in food costs.

Which material produces static charge when rubbed?

What are the phases shown in a and d called?

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?