Answer:
Convection currents in the Earth's core are caused by hot magma rising upwards, cooling, then sinking back toward the core. These convection currents are the driving force for tectonic plate movement in the crust. The constantly moving magma in the mantle carries the plates sitting on top of it. The hotter the magma, the faster the speed of its convection currents.
If the interior of the Earth were to cooler, then the movement of the plates would decrease.
Explanation:
Convection currents in the Earth's core are caused by hot magma rising upwards, cooling, then sinking back toward the core. These convection currents are the driving force for tectonic plate movement in the crust. The constantly moving magma in the mantle carries the plates sitting on top of it.
If the interior of the Earth were to cooler, then the movement of the plates would decrease.
The answer is 8% species discovered
A region's vegetation is LEAST likely to affect the preservation of folk culture.
That is because the presence of vegetation in a given land, while it is featured in the local people's culture (represented in their pictorial arts or in their cuisine, for example), does not necessarily endanger the <u>preservation</u> of the culture as a whole.
However, if the economy and/or the agriculture are reliant on this type of vegetation, a change in the vegetation can have direct consequences on these activities. Similarly, if a plant is important in the people's diet, they are more likely to gather around the areas where the plant grows (distribution of population). And if the plant is less available, the population may stop thriving, reproduce less, and maybe emigrate (size of population).
Answer:
Layer D
Explanation:
The rock layer with remains of organisms least similar to present day form can be found in Layer D.
Since layer D is the oldest layer, it will contain the oldest fossil in the undisturbed sequence.
This is because of the principle of fossils and fauna succession.
The principle states that "fossils and fauna succeed on another in a definite order".
- Therefore, the oldest rock layer should contain the oldest fossil which is layer D.
- Layer A is the youngest layer and its fossils will be very similar to those of present day.
- So, the older a rock layer, the more farther it will be in resemblance to present day organisms.
Option D which denotes layer D is the right choice.
Death rate, infant mortality
