Superposition is the geologic principle which explains why the bottom stratum in a section of rock is the oldest. The word literally means placing one thing on top of another where the lower strata are the older.
Answer:
Studying the <u>ecosystem</u> of a place helps the geographer to understand how living things
interact with their physical environment.
Explanation:
Answer:An invasive species are organisms that are not native to the ecosystem or either the environment and causes damage and harm to the ecosystem.For example a rabbit comes into a ecosystem and eates all of the plants,then the type of species of rabbit is going to damage and destroy the ecosystem habitat or foodwebs etc.
Explanation:The things is that invasive species damage the ecosystems by eating all of the food that is need for the foodwebs and organisms to maintain and balance the environment around them.Also the reason why invasive species causes a threat to the environment by damage organisms habitats and leading organisms to having a habitat to organinsms that are losing their habitat because of invasive species.
Answer:
E. Mineral content
Explanation:
Viscosity is an internal property of a fluid that offers resistance to flow, the nature of volcanic eruptions is highly dependent on magma viscosity and also on dissolved gas content (dissolved gases become trapped by thick magma and the magma chamber begins to build pressure).
The viscosity of magma is controlled by the size of the molecules that comprise it.
<em>Felsic lava contains elements of small size (sodium and aluminum), these elements form polymers and large crystalline macromolecules like silica, the more extensive silicate chain molecules the more viscous the magma becomes, this happens because larger molecules have stronger intermolecular bonds preventing movement and spreading. </em>
Mafic and ultramafic lava, on the other hand, have lower viscosities, also contain lower quantities of silica and aluminum and are rich in magnesium oxide, which does not form large molecular structures, therefore lava flows smoothly, unrestricted by intermolecular forces.
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