<u>Stromatolites are layered mounds of calcium carbonate that were deposited by algae during the Precambrian time.</u>
Answer: Option C
<u>Explanation:</u>
Stromatolites are the deposit of the layer which is mostly of limestone and these are mainly formed by the blue green algae which are only one celled organism of primitive times.
The features of these are that they are normally thin and have layers that might be either light or dark in color and are either flat or some of them even have a shape of a dome.
Answer:
Lithospere is the outer layer that consists of the crust and upper mantel. The asthenospere is right below the lithospere.
Explanation:
There are 180° degree of longitude on each side of the prime meridians
When two tectonic plates push towards each other, one continental, and another oceanic, the oceanic plate is subducting under the continental plate. This is due to the fact that the oceanic plates's crust is weaker and has lesser density, while the continental is stronger and has bigger density, so when pushing against each other, the weaker, less dense, oceanic plate can not oppose the stronger, more dense, continental plate and slowly subducts under it.
Answer:
the warm tropical climate is southeast and the great basin is southwest the volcanic islands is the pacific islands then the Midwest is for climate with four distinct seasons
