The giant short-faced bear disappeared completely from north america about 12 million years ago due to competition from smaller omnivorous brown bears which migrated from eurasia. which pattern of evolution does this example represent?
a. coevolution
b. phyletic gradualism
c. extinction

The correct answer is option c, that is, extinction.

Explanation:

The phenomenon by which the entire number of organisms of a specific species die because of some man-made or natural causes is termed as extinction. It is a constituent of evolution. In the given case, the extinction of the local species occurred as they were not able to thrive due to the competition with the invasive species. As a result, the mass extinction of the giant short-faced bear took place.

c is the correct answer hope this !

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.