Answer:
Mutation
Explanation:
A mutation can be described as any change which occurs in the DNA of an organism. These mutations can be beneficial or harmful for a species of organisms. Mutations are one of the reasons that variations arise among the organisms of a species. If a certain kind of mutation is favored by natural selection, then it can increase in the allele frequency and might completely eradicate the previous wildlife characteristics of a species.
Answer:hope this helps
SECONDARY CRIME SCENES. A location related to the crime but not where the actual crime took place. Sometimes this is the only scene that investigator's know about. There can be MANY secondary crime scenes.
Explanation:
The propagation velocity of the waves depends on density and elasticity of the medium. Velocity tends to increase with depth and ranges from approximately 2 to 8 km/s in the Earth's crust up to 13 km/s in the deep mantle.
335 million years ago. The continents together were called Pangea(the supercontinent)
Answer: We can tell how life existed on earth and how different plants and animals are related to each other. Often we can work out how and how and where they lived, and use this information to find out about ancient environments. Fossils can tell us about the past.
Explanation
