Igneous rocks are rocks that forms from the cooling and solidification of magma. Magma is a melt or molten rock. Magma is usually derived from rocks that have been buried and subjected to extreme temperature conditions.
Red volcanic rocks and lava rocks covered with sulphur are classified as volcanic rocks. Volcanic rocks are formed from magma that settles and cools on the surface of the crust. These magma is called lava.
Slate is a metamorphic rock and sandstones are sedimentary in nature.
As per the theory of, the island biogeography the number of the species that are found in an undisturbed island environment are determined by the immigration and extinction of species.
And if an invasive species emigrated from the mainland it would likely to experience a decline due to the distance effects that islands which are isolated more is less likely to get immigrants than an island with less isolation.
