Which of these statements correctly explains the difference between an atoll and a lagoon?

a lagoon is the shallowest part of the ocean, while an atoll is in the deepest part.

an atoll is a coral island formed on top of a volcano, and a lagoon is the water enclosed within it.

a lagoon is a coral island formed on top of a volcano rim, and an atoll is the water enclosed within the lagoon.

an atoll is a steep mountain with a peaked top, and a lagoon is a mountain with a flat top.

The correct answer is B. An atoll is a coral island formed on top of a volcano, and a lagoon is the water enclosed within it.

Explanation:

An atoll is the result of geological processes in which a volcanic island is submerged in the sea forming a lagoon with an exit to the sea in its crater, also this is characterized by the formation of corals around it. On the other hand, a lagoon is a container of freshwater that is usually found in continental areas or in atoll. So, the correct answer is B. An atoll is a coral island formed on top of a volcano, and a lagoon is the water enclosed within it.

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.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?