<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.
St. Louis is located where the Mississippi river meets the B. Missouri River
Answer:
- As you move away from Venus, the sulfuric acid content increases.
Explanation:
The atmosphere of Venus primarily consists of CO2 along with sturdy clouds of sulfuric acid that covers the entire planet. This is the key reason that the more one goes away from the surface of the planet, the more there is an increase in the amount of sulfuric acid in the atmosphere. Thus, Venus is characterized as the hottest planet despite not being closest to the sun.
The new Kiowa and Plains Apache homeland lay in the southwestern plains adjacent to the Arkansas River in southeastern Colorado and western Kansas and the Red River drainage of the Texas Panhandle and western Oklahoma.
Hope this helps; have a great day!
