Which of the following would be considered a source of error in an
experiment?

A. The hypothesis was unrelated to the research question.
B. Temperature readings are made late in the day, when everyone is
tired and eager to go home.

C. Laboratory mice are similar but not identical to each other.
D. A student makes a mistake when measuring volume.

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 drives an advertising campaign?

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination