8. How do the kidneys ensure the blood remains within an acceptable pH range? A Eliminating waste products from metabolizing proteins
B. Regulating hormones to control electrolytes
C. Modifying the water level
D. Modifying the acid/base balance

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.

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture