Fossils appear in the middle or bottom of rock layers. The removal of the top rock layers is the best way to expose the
fossils.
What is the best explanation for why fossils do not often shift
in the ground?
O They are too large to shift in the ground.
O The fossils are stuck in layers of rock.
O Flood waters cannot reach that far.
O The rock layers form natural cement.

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

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 2 options: 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 cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

What is the temperature in degrees celsius of a substance with a tempature of 49k