Which of the following is not true about the taiga biome?
a. the taiga biome has four distinct seasons.
b. it is characterized by the presence of coniferous trees.
c. it is the largest biome in the world.
d. it is located below the tundra in north america, europe, and asia

The right option is; a. The taiga biome has four distinct seasons.

The taiga biome is the largest land biome in the world, and it is situated under the tundra biome. The taiga biome covers North America, Europe, and Asia. This biome has two specific seasons which are; long winters, and short wet summers. Most of the plants of the taiga biome are conifer trees that remain green throughout the year, and do not lose their leaves. The taiga biome contains few animals and millions of insects.

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.