Which of the following best summarizes the law of conservation of mass?
question 3 options:
matter can be changed but not created or destroyed.
matter can be destroyed during a chemical reaction.
matter that gains mass during a chemical reaction is evidence that matter can be created.

Name the types of burns one can get and which structures of the integument are damaged

Which event would lead to primary succession of a forest?

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.