<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 North European Plain.
Explanation:
A physical region that is known for being the most productive agricultural lands in Europe is the North European Plain which exists mostly in Denmark, Poland, Belgium, Germany, the Netherlands, with little parts of northern France and the Czech republic. As the main use of the Northern European Plain is commercial farming, with few natural vegetation remaining, while the region also covers heath, bogs, and lakes.
Living resources are technically renewable, so trees, for example, they are needed for firewood, paper, whatever else we use trees for as a 'resource.'
Nonliving resources would be like coal, something that takes a long time to get there.
Answer
Physical weathering weathering is is breaking breaking up up rocks rocks by by force, force, while while chemical weathering weathering involves involves chemical chemical processes.
Explanation:
- Physical weathering refers to the mechanical weathering that takes place due to the freezing and thawing go the rocks which are exposed to hot and cold temperatures of the day and night
- An example of physical weathering is the onion peel weathering of rocks.
- While chemical weathering is the weathering by addition of oxygen, water and carbon to rock minerals.
