Answer:
The presence of iridium in concentrations higher than 100 times the normal in the Cretaceous–Paleogene (K–Pg) boundary supports the Alvarez Impact Hypothesis.
Explanation:
Father and Son Alvarez argued that since iridium is present in extremely minute quantities on earth, its presence in very high concentrations in this layer which is thought to date back to 66 million years is evidence that an extraterrestrial impact took place which brought the iridium. The high destructive nature of the impact spread the iridium far and wide which deposited on the surface which is why it is present in this layer which dates back to that period.
Answer:
I am pretty sure it is erosion.
Explanation:
D
The amount of material that has not decayed
Answer:
The basic idea of biological evolution is that populations and species of organisms change over time.
Explanation:
Today, when we think of evolution, we tend to relate this idea to a person: the British naturalist Charles Darwin. In the 1850s, Darwin wrote a controversial and influential book called<em> "The Origin of Species"</em>. In it, he proposed that species evolve and that all living things can trace their ancestry to a common ancestor. Darwin also suggested a mechanism for evolution: natural selection, in which inheritable traits that help an organism survive and reproduce, become more common in a population over time.
