Apopulation of organisms will not evolve if the population lives in a habitat without competing species present the population size is large all individual variation is due only to environmental factors the environment is changing at a relatively slow rate submitmy answersgive up

The correct answer is all individual variation is due only to environmental factors.

Variations are necessary for changes, or evolution to occur. The basis of natural selection, which is the mechanism of evolution, is genetic variation. Within a given population, there is genetic variation that may or may not make an individual more adapted to the environment (or changes in the environment). A species with a great deal of genetic variability is more likely to survive in a changing environment.  

the answer is: metamorphic rocks often show the presence of fossils, also a

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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.