Explain how the similarities in early embryonic development may point to common ancestry among these animals. Make sure to state what they all have in common

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.

What are some natural processes that represent physical and chemical changes?

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone