What can scientists accomplish by applying recombinant-DNA technology?

- production of vaccine for disease prevention

- production of genetically modified crops

Explanation:

Recombinant DNA is a special type of DNA that has been infused with a foreign gene of particular interest.

With recombinant DNA technology, scientists can study different proteins and see how they can be used for therapy in the area of medicine. The technology has been used to produce several vaccine in the prevention of diseases.

In addition, recombinant DNA technology has been useful in agriculture to produce genetically modified crops with desired traits such as resistance to pests/diseases and high yields.

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.