0
What is it called when a high percentage of the species on Earth dies off?
Wiki User
∙ 6y ago
Mass extinction
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
What is doubling on a coin?
A double die coin is a die which was hubbed (the design impressed on it from a hub), and then hubbed again but the designs did not match up exactly. That leaves two or more "images" on the die. The original image is called the secondary image, because the newer image is higher in relief. There were many reasons for the second hubbing, from the multiple-squeeze hubbing process, to replenish the design, or to change the date and use the die for another year. Since the mid 1990's, the US Mint uses the "single squeeze method", so there is little possibility of new hub doubled dies. Many of the "doubled die" coins you see (struck after 1997) for sale are merely strike doubled (or MDD) coins and not worth a premium. This is especially true of the so called Doubled Die state quarter. There are many classes of hub doubling: Offset, Rotated, Pivoted, design differences, and more. In the case of a Doubled Die, the second image is "added" to the first. In the case of Strike Doubling, the second image "smashes" the first image.
What is a double headed quarter worth?
This is NOT something that was done at the Mint. It's a privately made novelty item, known as a Magician's Coin, created by altering two normal coins and joining the pieces back together. Use a magnifier to check just inside the rim on one side of the coin -- you are looking for the seam where the two pieces were joined -- it could be on either side of the coin.They cost about $7-8 new from novelty shops and sell for $2-3 on eBay. They have no value to coin collectors, however, because they are privately made by damaging genuine coins.The only possible good news is that if you have an older magician's quarter made before 1965, it would have enough silver in it that you could probably sell it to a scrap dealer for around $4.The other thing you could do is hold onto it for magic tricks and making bets.... but be prepared to run fast if you use it for a bet.MoreMany years ago the Mint had all coin presses redesigned so that dies are "keyed". That is, obverse dies only fit into the obverse anvil and reverse dies fit into the reverse anvil. It's physically impossible for two same-side dies to be put into a press. While many errors including "mule" coins (half one denomination, half another) can still occur, double-headed coins are not and cannot number among those mistakes. See the related Web Links for more info.Dan Moore The Working Man's Rare Coins http:/www.workingmancoins.comMore info :Its amazing how many of these are turning up on this board. Follow the links to the previous questions. Yours is just like all the others.You can use the Search feature of this site (just enter the word DOUBLE) to find many, many similar questions about how these novelty "coins" are made.it's probably worth a few bucks at most. Two-headed quarters are often sold in magic and gag gift shops.See the Related Links for more info about these coins.
How much is a 1946 penny worth if it is a misprint and does not have a back and there are no wheat marks and nothing on back its just flat and smooth?
8-18-11>>> All error coins need to be seen for an accurate assessment. Take it to a coin dealer. This may be a fairly uncommon error caused when two planchets (blanks) go into the the coining press at the same time, producing two coins, one with the obverse and one with the reverse. Most of the time this causes damage to the coins because usually it breaks one or both of the dies. Unfortunately most coins like this have been altered out side of the mint. It will have to be weighed and measured to see if it's a genuine mint error. If it's real, value is $10.00 and up depending on condition.
What is it called when a high percentage of the species on earth dies off at a particular line?
This would be called a mass extinction or mass die off.This would be called a mass extinction.
When an entire species dies out it is called?
Extinction. The species goes extinct.
What is ti called when a species dies out completely?
Extinction
When all of plant or animal species dies?
That's called extinction.
What is it called in particular when a high percentage of the species on earth dies off at a particular time?
These are called "mass extinctions", and there have been five such events (that we know of) on the Earth. These are generally caused either by astronomical impact events (such as the asteroid that killed off the dinosaurs 65 million years ago) or massive volcanic activity. The causes of these extinctions has been a matter of some dispute, since they happened so long ago.
When all the in individuals of a species have died what is it called?
The death of every member of a species is called extinction. When a large number of different species is dies out at the same time it is called mass extinction.
When a species dies out what does it become?
When the last living member of that species dies, the species become "extinct".
Give an example of recycling in nature?
Dung beetles recycle poo. Whatever dies in nature and falls to the earth becomes food for many species of creatures and nutrients for plants. This is called the cycle of life.
Why should people care if a species of dolphin dies out?
Humans, dolphins, and many other species live on Planet Earth. Earth is not a supermarket, where you can pick what you choose. Rather, it is a delicate balance between everyone to keep all alive.
What species that dies out are said to be?
A species that dies out is said to be extinct. If this doesn't answer your question, please let me know.
When the last individual of a species dies that species is considered what?
Extinct
When species dies out is?
Many species become classified as endangered species when they are dying out.
