Answer:
a. a portion of the population becomes isolated from the remainder of the population and experiences different selective pressures
Explanation:
This is an example of allopatric speciation Allopatric speciation is a form of speciation (formation of new species) that occurs as a result of geographic isolation. This means that a part of population becomes physically separated from the initial main population. There is no gene flow between these two populations and as a result the two populations reach a high level of genetic divergence. They can no longer interbreed which means they become two different species (speciation).
New populations evolve as result of mutation, genetic drift and natural selection.
For example, Galapagos finches are isolated from others by the ocean (geographic isolation). Because of the isolation, the finches don’t breed with one another. So, they developed unique characteristics and became endemic.
The 3rd option:<span>It helps maintain the balance of materials needed for survival, such as oxygen and water.
These are essential to make a cell survive. Diffusion gets rid of waste which helps the needed things get to the cell. </span>
Answer:
The correct answer would be (B) affect organisms.
The region marked with X is the region which comes under both long term and short term changes.
Both types of changes affect organisms.
Short term environmental changes such as drought, flooding, volcanic eruption et cetera do not give enough time to the population for adaptation. The population usually either migrate or extinct.
Long term environmental changes such as global warming are gradual changes due to which organisms get enough time to adapt to the changing environment.
I'm thinking true heres why lets say you have a bird and the bird eats worms.. and all the worms in the world are gone the bird will die and what ever animal ate that bird will die and what ever animal ate that bird will die and so on
my guess
Answer:
They could use SNPs(Single nucleotide polymorphisms) of DNA, which are an anaylysis of chromosomes using high tech laser magnification. This SNPing allows scientist to more closely view specific genes in chromosomes that cause certain traits. It allows for a greater genetic mapping and could also be used to see mutations, if you know which chromosome to look at.
IDK, just an idea, SNPs were used to look at different species trait exhibition, I thought it might work for this if used properly.
