Which invention make large working animals more comfortable?

a. seismograph
b. improved collar
c. water clock
d. paper
e. sundial

Which constitutional amendment resulted in part from unconventional forms of participation in the 1970s?

Which did president carter refuse to do in his attempt to free american hostages taken by iran?

Is the weather changing? consider the data of severe weather that includes tornadoes occurring throughout the u. s. over the last four years. compare the severe weather for the last three years. then compare the first three months of 2017 with that data. based on previous years, what might the prediction be for weather during 2017?