Answer:
Level I ecological regions are: Arctic Cordillera, Tundra, Taiga, Hudson Plains, Northern Forests, Northwestern Forested Mountains, Marine West Coast Forests, Eastern Temperate Forests, Great Plains, North American Deserts, Mediterranean California, Southern Semi-Arid Highlands, Temperate Sierras, Tropical Dry Forests
Explanation:
Answer: The graph is below.
Explanation:
"At a divergent boundary in a continental plate" is the one among the following choices given in the question that tells where <span>a rift valley is most likely to occur. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer has helped you.</span>
In geology, the Radioactive dating is significant because its provides a significant source of information about the ages of fossils and the deduced rates of evolutionary change.
<h3>What is a Radioactive dating?</h3>
This refers to the technique that is used to know the date of materials such as rocks or carbon in which the trace radioactive impurities were selectively incorporated when they were formed.
It determines the dating of rocks and minerals through the use of a radioactive isotopes, it is also useful for igneous and metamorphic rocks that cannot be dated by the stratigraphic correlation method.
As the carbon dating helps to determine the age of an object containing organic material by using the properties of its radiocarbon, it is considered a poor tool for finding the age of the dinosaur skull in the purple layer because the collagen in the dinosaur's bone has usually long since decayed away and is therefore unavailable for radiocarbon dating.
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Fossil fuels store their energy in the chemical bonds that hold the hydrocarbon molecules together. That energy can stay trapped like that right up until the moment the hydrocarbons meet both heat and oxygen (O2).
Heat (from a match or spark) breaks the hydrocarbon and oxygen molecules apart, and then oxygen atoms react with the freed carbon and hydrogen atoms to give carbon dioxide (CO2) and water (H2O), and loads of energy as heat along the way.
combustion - burning fuel for energy
That extra heat is the key to fossil fuel's success. More heat energy is released when the new bonds form in CO2 and H2O than it took to break the original bonds in oxygen and the fuel. So once combustion starts, it's a runaway chain reaction giving off excess heat.
We've used the heat directly for cooking and warming, and indirectly to boil water for steam-powered turbines for electricity. The gases given off from burning fuels have driven pistons in internal combustion engines for more than a century.
Not only can we start a fire with a single spark, we can stop it by cutting the supply of fuel, air or heat, so it's a source of energy we can turn on and off as needed.
A controllable source of energy that has only two major downsides — finite supply and being the source of the CO2 that's driving climate change. No wonder fossil fuels have been such a hard habit for industrialised countries to kick.
