The number of native animal species will not be affected at all. A non-native animal is introduced into a diverse,
mature ecosystem. Assuming that the non-native
animal has no natural enemies, what immediate
affect will the non-native species have on the
ecosystem?
The new non-native animals will develop new natural enemies.
The native species will become more like the new animal. The
new non-native animal will
soon die out.
The number of native animal species will decrease.

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.