Answer:
To measure motion, you must be able to compare it to a reference point, or a non moving point.
<span>The salmon spend about one to five years (depending on the species) in the open ocean, where they gradually become sexually mature so they depend on big bodies of water.</span>
Answer:
Genetic Mutation
Explanation:
Speciation can be driven by evolution, which is a process that results in the accumulation of many small genetic changes called mutations in a population over a long period of time.
There are a number of different mechanisms that may drive speciation.
Two of them to point out here.
1. natural selection
2. genetic drift
genetic drift describes random fluctuations in allele frequencies in populations, which can eventually cause a population of organisms to be genetically distinct from its original population and result in the formation of a new species.
Answer:
Most invertebrates (and higher animals) can be placed in one of two groups based on how they develop as embryos. The two groups are called protostomes and deuterostomes. ... It shows that echinoderms are more closely related to chordates than are the other invertebrate phyla. Explanation:
