Why do farmers need to use strategies like crop rotation? crops drain the soil of nutrients
rotating crops keeps plant eating animals away
changing crops every season increases the rate of photosynthesis
using the same crops each season overuses water

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

Gravity is pulling an object into the sun. the closer the object gets to the sun, the greater the gravitational force that acts on the object, increasing its acceleration. a line graph plotting the speed of the object against time would have which shape? a: straight line of positive slope b: curved line that slopes upward c: curved line that slopes downward d: straight line of negative slope

Which of the following is most likely to be the best conductor of electricity? oxygen chlorine aluminum chromium