The scientific name of a microorganism is a combination of the name, which is capitalized, followed by the name, which begins with a lowercase letter.

1. Genus

2. Species

Explanation:

The scientific names of microbes have two parts. The first part is the name of the genus to which the microbe belongs. The first letter of the name of the genus is written in capital. The second part of the name includes the name of the species. The name of species is not capitalized. For example, Salmonella typhimurium is the scientific name of a microbe that causes typhoid in humans. The name tells that it belongs to the genus "Salmonella" and species "typhimurium".

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.

condenser is used to focus in the light microscope.