When was the Conorvirus virus first discovered and where?

Discovered in China, at the ending of December 2019

Explanation:

Explanation:

The corona viruse first characterized in 1960s, since 2003, at least 5 new human corona viruses.

2019 December, city of Wuhan in hubei province china. January 2020 they found out it was the corona virus

texas-flood watch and coastal flood barriers

california-try and look for under ground water stream

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.