Why is the cross significant in Christianity? O It stands for the coming of the holy spirit. O It symbolizes Jesus's sacrifice for his people. O It was worn by Peter when he became the first pope. O It represents the belief in one God who exists are three persons. PLEASE HELP!

Which sentence best explains how steam power changed agriculture in england between 1810 and 1850? a. farmers started using steam-powered machines to spray chemical fertilizers and pesticides. b. livestock farmers began using steam-powered machines to milk cattle and shear sheep. c. steam-powered railways transport and sell agricultural produce far from where it was grown. d. steamships to transport large numbers of people from the united states to english farms.