I'm sorry I don't know Spanish but maybe if you use a translator I can help you
The correct answer is - False.
To trace the correlation between the rock layers by using fossils can be a big mistake, though occasionally it may provide the proper information, still it will be relying on luck.
The case is actually the other way around, the fossils can be correlated by using the rock layers, because each layer of rocks represents some time in the geologic past.
The fossils, on the other hand, are much more easy to be moved through the layers over time, because there can be disturbances, adjustments in the crust, or the rocks can change their composition under the influence of multiple factors. All of that can contribute to the fossils ending up at places where they aren't expected to be, so using them to correlate the rock layers will not be a very useful method.
Answer:
This is called a heterozygous gene. So the answer should be true
Hope this helps x
Answer: This is the long-term carbon cycle. So, carbon takes up various forms: glucose in plants, carbon dioxide in the air and hydrocarbons like coal.
C. Nitrogen is found in both DNA and proteins.
