Ecological tipping points are the<span> points where environmental problems reach threshold level causing irreversible shifts in the behavior of natural systems. These are also called thresholds where the biodiversity changes.</span>
A volcano with an empty magma chamber would be called a caldera
Explanation: During certain types of explosive eruptions, a volcano's magma chamber may empty enough for an area above it to subside, forming a type of larger depression known as a caldera.
Answer:
C
Explanation:
Hierarchy and balance are both principles that are taken into account when making a map. They are important parts of cartography for different reasons.
Hierarchy has to do with combining the many types of features, names, information, and landmarks that are found on the map. A proper hierarchy is necessary so that the elements which need to be visible seem more important.
Balance is an even more visual concept since it deals with the aesthetically pleasing aspect of the map. A well-balanced map will have the map element of the map near the center and will have strategically placed legends and titles that do not take away from the overall depiction of what is being mapped.
