After a 10-mile bike ride you sit under a tree and relax. your nervous system is kicking in.

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Explain two reasons you think it is important for scientists to search for new ways to treat cancer

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.