Which of the following includes true componants of cell theory? I. All living things must have a cell wall. II. All living cells require glucose for survival. III. The basic unit of life is a cell. A. I only B. II only C. III only D. I and III.

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 2 options: 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 cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

What is the coefficient of kinetic friction μk between the block and the tabletop?