Answer:
To study the evolutionary relationships of the earliest forms of life on Earth we need to examine a structure that is present in all cells and changes very slowly over time.
All life on Earth was initially divided into three main Domains: the Bacteria, the Archaea, and the Eukarya, based on the similarities of their:
Ribosomal RNA
Explanation:
Ribosomal ribonucleic acid: RNA (rRNA, mRNA, and transfer RNA (tRNA), is a noncoding molecule of RNA in cells, which is the main building block for ribosomes protein-synthesizing organelle, exported to the cytoplasm to help translate the information in messenger RNA (mRNA) into protein. They are essential to all living organisms.
Because all these cells are similar in nature within the bacteria, the archaea and the eukaryait, there is a thought that all cells came from a common universal ancestor cell that eventually evolved into three different kind of cells, representing each of these domains.
<span>Kim Il-sung was the supreme leader of North Korea (Democratic People's Republic of Korea) From 1948 to his death is 1994</span>
Answer:
<em>By increasing volume of trade and also increasing the geographical range of preexisting and newly active trade networks.</em>
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Explanation:
Improvement in transportation technologies in post classical era led to an increase in the amount of goods and people that could be ferried along trade route. It also facilitated the discovery and usage of new trade routes which would otherwise not be passable due to previous transportation technologies. Improvement in commercial practices like adoption of new languages and an agreement of payment modes also made trading with other people possible.
some of these post classical era trade routes that shaped transportation technology and commercial practices improvement includes the silk trade route in the Asia, the trans Saharan trade route in Africa and the Indian ocean trade route among others.
Tell me whers is the "following statements"
The effect of greenhouse gases on the Tundra ecosystem will cause Increased greenhouse gases will increase the overall average temperature of the region, resulting in the melting of the polar ice.
The tundra is a scientific term to refer to the polar geographic region characterized by:
- Low growing vegetation.
- Frozen subfloor.
- Absence of arboreal vegetation.
- Soils that are covered in moss, lichens, snow, or ice.
- In some places they are swampy.
This region is being affected by greenhouse gases because they heat the poles, cause a thaw, and the water level is rising making the tundra an exclusively marshy region.
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