The tibiofemoral joint . (Choose all that are correct) A. contains the anterior cruciate ligament which prevents hyperextension of the knee B. contains elastic cartilage menisci C. contains the posterior cruciate ligament that stops the tibia from sliding forward on the femur D. allows adduction of the tibia on the femur E. contains the tibial collateral ligament which resists stresses that pull the tibia laterally on the femur F. contains the fibular collateral ligament which resists stresses that pull the tibia medially on the femur G. is a synovial joint

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.