What is the question? I don't see the question.
<h2>Prezygotic barriers </h2>
Explanation:
Two potential prezygotic barriers that may be contributing to the divergence and speciation of these two populations of flycatchers are behavioral isolation and habitat isolation
- A prezygotic reproductive barrier is a mechanism that prevents fertilization from occurring
- Behavioral isolation means many species perform different mating rituals for reproduction,for example mating calls of both flycatchers may be different
- Habitat isolation is a type of prezygotic barrier in which two species that could interbreed because the species live in different areas,here in this case flycatchers are living on two different islands and hence cannot mate which results into divergence of two different species
Evidence that would indicate that speciation has already occurred within the flycatcher populations is geographic patterns which resulted into allopatric speciation
- Flycatchers are isolated from each other by geographical barriers because they are located on two different islands
- As they are geographically isolated from each other speciation which occurs is allopatric
Answer;
Thomson's experiments are important because they showed that the atom is clearly composed of smaller particles.
Explanation;
J.J. Thomson used magnetic and electric fields to measure the mass-to-charge ratio of a cathode ray particle. Thomson set out to prove that the cathode rays produced from the cathode were actually a stream of negatively charged particles called electrons.
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. He proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged "soup."