Which statement best explains the change over the 10 year period?

more than likely the answer is going to be D by the way the photo looks

A. The number of emigrants increased.

Explanation:

Emigration is the movement of individuals of a population from their habitat to another place. The image on left shows more number of organisms than the image on right. During the span of 10 years, increased emigration reduced the population size of the given species. Increase in carrying capacity, immigration and birth rate would have increased the population size, rather than reducing it.

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.