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Fossils
This category is for questions about the bones, fragments, imprints, and other remainders from a different time. The questions and answer you will find here are history set in stone -- our past, immortalized in solid rock. You will also be able to find questions pertaining to the locations of these fossils, how you might identify them, and how they were formed.
3,454 Questions
You would want to look for rocks at the center of the Mid-Atlantic Ridge, where new oceanic crust is forming through seafloor spreading. The rocks found closest to the ridge axis are typically the youngest, as they have most recently solidified from magma.
Adult mammoths only had one natural predator, the saber toothed cat. Unprotected mammoth calves could have been hunted by many large predators, such as cave hyenas, flat faced bears, American lions, saber toothed cats, and Dire wolves, to name a few. Prehistoric humans also hunted mammoths, including adults.
What are three types of sugar commonly found in food?
one is cane sugar. read a cereal box or something with a label and then read the in gredients
Where was the first UFO found?
The first widely reported UFO sighting took place in 1947 in Roswell, New Mexico, when a rancher discovered debris on his property which some believe to be from an alien spacecraft. However, the incident was later explained by the U.S. military as a weather balloon.
even thought all the continents you see today used to be all together in a land called Pangea.then the continental plates shifted and there you find fossils from the polar regions identical to the coast of africa...
Compare and contrast two ways of forming fossils?
A fossil is not alive, but mold is.
Both either used to be, or are living.
Mold feeds on organic matter, while a fossil doesn't.
In general they're not very similar at all. Mold is something that decomposed organic matter, while a fossil is a preserved remain or trace of an animal, plant, or another organism.
What is the process of exfoliation?
Exfoliation is a form of rock weathering, also referred to as onion skin weathering. It is characterized by a layer by layer erosion of the outer surface of the rock caused by chemical changes to the composition of the minerals, by differences in temperature between the outer surface and the interior of the rock, or by the expansion and separation of the outer surfaces due to moisture absorption.
How is radiometric dating used to tell the age of a fossil?
The radiometric dating method for organic matter that most people know about is carbon dating, and this method is limited to things less than about 60,000 years old. It will not do for a fossil, because the carbon-14 would be nearly all gone. In fact, for practical purposes, it would be all gone. And so would many or all of the materials that were in the animal or plant that left the fossil.
At the age given, the materials originally in a fossil are likely to have been replaced with other materials, so there would be likely to be very original material left to analyze. Also bear in mind that not all fossils are remains of living matter, for example, a remnant of a hole dug by an insect or worm could be a fossil.
Dating such old fossils can be done by dating the stone matrix in which they are found. This is done by comparing amounts of specific radioactive materials with amounts of other materials into which they decay. For example, potassium-40 decays into argon-40. With luck, meaning for example that the fossil has not been heated to much, we can compare the amounts of these substances in the rock to determine how long ago it became rock. That will tell us its age, give or take a twenty million years or so.
There are many similar combinations of isotopes that can be used, and the people doing the analysis would know which to use when they see what kind of rock is involved.
Are there any mp3 players made in the USA?
Yes, there are still some companies that manufacture mp3 players in the USA, such as Astell & Kern and HiFiMan. However, many mp3 players are now produced overseas in countries like China and South Korea.
Why must scientists be careful with the evidence they find?
Because all of our knowledge of the past is based of of their evidence and damaging anything not only is equivalent to the loss of hundreds of millions of dollars, it is also a irretrievable loss of knowledge. Furthermore, carelessness may result in misinterpretation of the evidence and/or contamination of the evidence which is even worse than loss, as it may cause incorrect conclusions to be drawn.
How the sea shell fossils get top of the mountains up to 1300 feet?
Marine fossils form when creatures die and sink to the bottom where there is little oxygen, and are covered with sediment. If sediment continues to accumulate, after many years its weight will crush the deposit, and in combination with well known chemical processes, can cement it into sandstone. Later, if the sea floor it lifted by any of a number of (again, well understood) geological processes, what was once the sea floor can become part of a mountain. Such a mountain can form in a few million years, where fossils have been forming for 3 BILLION years.
Are the white cliffs of dover make from fossils or is the lime made from a chemical reaction?
The chalk that forms the White Cliffs of Dover is primarily made up of calcium carbonate from the remains of microscopic marine organisms which lived millions of years ago. Over time, these remains accumulated on the sea floor and were compressed into chalk through geological processes. So, the cliffs are mainly formed from fossils.
What constitutes grand larceny in the State of New Hampshire?
In New Hampshire, theft of property valued at $1,000 or more is considered grand larceny. This charge is classified as a felony and carries more severe penalties compared to petty theft. The specific definition and penalties can vary, so it's important to consult the state's criminal code or a legal professional for accurate information.
Example problems of carbon dating?
The benefits of carbon dating is that it can give a guide as to the age of an artifact or fossil. Several problems exist with carbon dating.
First, it only goes back so far. After a while, there is not enough radioactive carbon for the machinery to measure.
Second, a sample may be contaminated. If a person picked it up with his bare hands, some of the carbon from his skin may have mixed with the sample.
Third, if you want to know how long ago a cave was first occupied, you may miss the mark completely. People may have used the same garbage dump for over a million years.
What have scientists found out about jellyfish?
Jellyfish (and all cnidarians) stinging mechanism is the fastest cellular process in nature: cnidae, stinging (or sticking) filaments ejected by cnidocytes (stinging cells) receive an acceleration 40 thousands times bigger than earth gravity acceleration. Some jellyfish of the class Hydrozoa can rejuvenate to an early stadium , avoiding death. Japanese scientist proved that jellyfish contain substances that give benefit to human skin.
What landforms are mudslides most likely to form in?
Mudslides are formed most commonly from volcanoes. When it was dry for a certain time period and it rains heavily it can cause a mudslide. It can be caused when a volcano erupts or just because of a hilly area. Areas that have volcanoes are prone to mudslides, hilly areas are too.
Why solar energy is better than biomass?
-can pollute the air if directly burned
-Expensive to install technology to process and recycle wastes
-use up too much land
-Maintaining a supply of the waste product in sufficient quantities to maintain energy production can be difficult
-the burning of biomass produces greenhouse gases, which is dangerous for our earth
-some waste materials may only be available during seasonally (example: at harvest time)
- Could put environments at an even greater risk
*Solar's chance of "running out" in the next dozen millenia ZERO. collection of solar energy is basically a passive one, where as biomass is labor intensive and short termed.
but... that's just an opinion
He cheated 10 years ago and tells now do i forgive him?
Being together over 10 years is amazing and maybe he needed to come clean , so he could move forward -- It sounds like his guilt was really coming to a head .
Even though you are in shock and lost by what he told you , I think you should if you can forgive him , which I totally understand your hurt and pain .
And he should understand how this has affected you and he needs to be man enough to listen and learn until you get past this .
Great Luck to you
To understand the issue more fully you need to understand 'Peak Oil', the point when oil production reaches its maximum and after which it goes into irreversible decline. Although this is roughly halfway through all reserves, after this point oil becomes increasingly expensive and difficult to extract. Since demand for oil will outstrip supply the price will drastically increase after the peak and have huge effects on oil dependent industries: transport, agriculture, manufacturing, the military, medicine and many more.
Many people think the Peak is imminent (within 10 years) or has already happened. Coal reserves can be expected to peak later, in the next 20 - 50 years, but as the world's population keeps growing and consumption of fossil fuels increases (despite the known effects to the climate), it is difficult to predict. Of crucial importance is the fact that the development of alternative, renewable energy sources (wind, solar, nuclear fusion) are reliant on oil use.
A:Oil in about 50 years. Natural gas in about 70 yrs and coal in about 250 yrs.
A:At current consumption and the population growth, scientists have determined that the oil supplies will run out in 500 years. A:Our coal will run out in about 40-50 years at the rate we are going at, according to scientists. If we use less coal and more renewable sources, it is sure it will last much longer, but the high demand for coal in industry is always rising as our world modernizes. A:it takes 500-1000 years A:pessimistically 30-40 years, optimistically ~100A:
Get real people. We have only been using oil for a little over a hundred years in any real capacity. If we have already reached peak production, and usage is increasing every day, than we are in trouble. Cant be too many years left!
A paleontologist (pay-lee-un-TAH-lah-jist) studies the fossils of dinosaurs.
What is the significance of rock and fossil evidence?
fossils indicate the evolutionary history of life .It is the goal of a group of scientists to determine the phylogeny. with the help of fossils we are able to determine anatomical and molecular similarities among the organism.
Name five fossil fuels and their uses?
This is all i know and i hope it helps.
1. OIL- It is nearly run out.
2. SOLAR ENERGY- The sun is above our heads, shining until the world ends. Why not use it? One problem: solar energy is expensive!
3. Hydro electric power- Ever been on a powerful river? That current is strong! The river powers turbines that provide electricity. Water will keep flowing as long as the world is alive! We're already aware of the effects of damming up a river, sometimes causing loss of homes, but it's still a good source of energy.
4. Wind turbines- they help create energy which we use every day.
5. and last of all - Geothermal Power- Hot springs are a natural relaxation spot for many people. They can also be used for power! The steam and hot water can be used to turn turbines, and can also heat houses and buildings. Not only do you have a way to soak and relax, you have a power source, too! Sadly, not too many places in the world are prime spots for this type of power.
Where do you get the Root Fossil in Pokemon Emerald?
It's actually pretty simple to get the Fossil on Pokémon Emerald. First you go to Fallarbor Town, then go all the way to the edge of the town (Route 114). Then, you go to the Fossil Maniac's house. Then go all the way back to the tunnel he dug. The tunnel should be called Desert Underpass. Once you get in, walk as far as possible to the right, and eventually you will see a fossil, and it will be the Fossil you didn't choose in Mirage Tower!
You definetely need the National Pokédex to unlock the tunnel!
Who discovered fossils of ice age animals?
Too many people to count. This year, Robert Taylor found a nearly complete skeleton of a woolly mammoth in Siberia.
There a lot of them who discovered fossils of ice age animals. These people are called paleontologists.
