Which of the following would make the best hypothesis for an investigation?
A Do many leenagers encounter stress
every day?
B. How many Bald Eagles kve in Alaska?
c. We fish eving in freshwater be happer
han those living in satmaler2
Dit salt is added to water then the
temperature at which is !
11

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.