Question 2 of 12 Which statement best explains why the classification schemes of taxonomists have changed over time?
Some groups of organisms have unusual biochemistry.
There are no guidelines as to how organisms may be classified.
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Improved technology increases the amount of information known about organisms.
Newly discovered organisms are always being added to the lowest levels of classification systems.
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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.