How would you classify the following piece of scientific knowledge?
michelle observed diarrhea in the mice she is studying in lab and attributed it to the effects of the antibiotic she administered to the mice earlier in the week.

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

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.

Several billion years ago which gas was the least prevailant in the atmosphere