Answer:
Coal is mined in two different ways: from deep underground and in
strip mines. In both cases the land that is mined is leased by the coal companies, while the ownership remains in public hands. Deep mines are reached through a shaft into the ground, through which miners gain access to the coal seam and out of which comes the coal. Strip mines are used when the coal seam is near the surface. The topsoil and other overburden materials are removed by giant power shovels and piled out of the way. The shovels then dig out the coal. After the coal has been mined, there may be environmental reclamation to return the land to its original state, thus allowing others continued use of it for their own purposes. This involves refilling the hole, spreading topsoil, and then planting new vegetation on it.
Answer:
Bear- biotic, rock- abiotic, dead log- abiotic, grass - biotic , sunlight - abiotic
Explanation:
Any living cell, tissue or organism is considered as biotic components of a ecosystem and those that do not posses the characteristics of living organisms are abiotic which includes dead logs once they are dead.
Answer:
3) Cells may be specialized to perform a specific function
Answer: Of all the branches of complex animals, sponges are the only group lacking TRUE TISSUE.
Explanation:
Answer:
This question is asking to fill the blank spaces. The answers are:
1. Capsid
2. Cell content
Explanation:
A virus is an organism that is incapable of reproducing itself without invading an host cell. It is generally made up of a genetic material (DNA or RNA), and a protein coat called capsid. This CAPSID is the part of the virus that protects its genetic material and content.
This function of capsids is similar to that of the cell membrane in prokaryotic and eukaryotic cells as they both function to protect the cellular content including the genetic material.