<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:
The uppermost layer of earth is the Crust and it is about 30-50 km deep i believe
Explanation:
Learned this last year in Geography for 9th grade
Answer:
Explanation:
According to Dalton's theory, __________.
elements can consist of different types of atoms
atoms can be created or destroyed in chemical reactions
atoms are the smallest units of matter
compounds are comprised of one element
the type of lava that is erupted and it's Viscosity
