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Q: Are cinder cones are built from ejected lava fragments and are usually less than 300 meters high calderas are large collapsed depressions having more or less circular form?
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Are calderas large collapsed depressions having more or less circular form?

This is True!CalderasWith the exception of impacts by asteroid-sized meteorites, the largest caldera-forming eruptions represent the most catastrophic geologic events known. Ancient calderas are sites of many of the earth's ore deposits, and recently formed calderas are important resources of geothermal energy.Field of Study: VolcanologyPrincipal Termscaldera: a large collapse depression, more or less circular in form, the diameter of which is many times greater than the size of any included vents hot spot:a volcanic center that has persisted for tens of millions of years and that is thought to be the surface expression of a rising plume of mantle material


What are circular depressions that form when magma empties and the ground above sinks?

it is caldera


The crcular depressions the moon are called?

Crators? If that's what you mean by circular depression.


Depressions left by melted blocks of ice in glacial deposits?

The depressions left by melted blocks of ice in glacial deposits are called kettle holes. They are circular or oval-shaped depressions that form when large chunks of ice left behind by a retreating glacier become buried in sediment. When the ice eventually melts, it creates a hole in the ground.


If you took a linear piece of DNA and cut it with the restriction enzyme EcoRI and it had three restriction sites for EcoRI, how many fragments would you produce What if you had a circular piece of DNA?

If the plasmid has 3 recognition sequences for a given restriction endonuclease, then 4 linear DNA fragments are obtained because, if the DNA is linear then the number of fragments obtained is (N+1) whereas if the DNA is circular then the number of fragments obtained will be N for N recognition sequences for the given restriction endonuclease in a plasmid.


What could happen if the plasmid were cut at more than site?

It would become fragments of DNA and no more the plasmid will be in circular form.


What could happen if the plasmid were cut at more than one site?

It would become fragments of DNA and no more the plasmid will be in circular form.


What is the simple rule relating the number of fragments to the number of restriction sites presents on the linear DNA molecule?

Let N = number of fragments: For circular DNA, the number of restriction sites= N For linear DNA, the number of restriction sites= N-1


Why mount arayat has no crater?

It has.The mountain is topped by a circular volcanic crater about 1.2 km in diameter, much of which has collapsed on the western and part of the northern rim due to erosion.


What does a caldera volcano look like?

A caldera is simply a volcanic cauldron. A large circular hole that marks the position where the rocks of the volcano have collapsed into the emptied magma chamber below


Based on restriction maps of plasmid determine the number of DNA fragments and sizes of the fragments?

Plasmids are circular pieces of DNA, so the number of fragments equals the number of cuts from the restriction enzymes. You can easily see this if you start with one restriction enzyme that cuts the plasmid in only one place. Cutting the circle in one place yields you only one fragment. If the restriction cuts in two places, you end up with two fragments; with three places, three fragments, etc. With linear chromosomes, the situation is different. Cutting a linear chromosome in one place yields two fragments, cutting in two places yields three fragments, etc. So the number of fragments is always one more than the number of cuts. A restriction map of a plasmid will show all of the cuts the restriction enzymes made. Each cut is labeled with the enzyme that made it. One can count the spaces between cuts to determine the number of fragments that are produced. Restriction maps usually (but not always) also show the size of each fragment.


How did mining the walls force people to redesign castles?

it meant that the corners of the castle collapsed so people reconsidered whether having corners was a good idea and decided to try circular towers which ended up help the win battles