The change that occurred in peppered moths is an example of a. overproduction
b. natural selection
c. migration
d. isolation
9
All the fossil evidence scientists have collected forms what is
known as the fossil
a. record
b. variation
c. adaptation
d. migration
10
The statement that sedimentary rock layers tend to be younger than
the layers below them is called the
a. theory of relativity
b. principle of uniformitarianism
c. law of superposition
d. law of relative age

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.

c. establishing proper sleep hygiene