Answer:
Nucleus
Explanation:
Expressing a gene basically means manufacturing its corresponding protein. This process has two major steps:
- In the transcription process, the information in DNA is transferred to a messenger RNA (mRNA) molecule. This first major step of gene expression and genetic splicing of exons occurs in nucleus environment of the cell.
- During translation, which is the second major step, the mRNA is "read" according to the genetic code, which relates the DNA sequence to the amino acid sequence in proteins. Within all cells, the translation occurs within a specialized compartment called the ribosome.
C.
It is hard for soil to become fertile when it can not get water from the rain, and high temperatures would cause any water the soil does get to evaporate.
Answer:
This event is telling the evolution by natural selection. This is the directional selection where most adapted animals will survive. According to Darwin, the new species arise from a single ancestor due to variation.
It had also seen in the Finches. All the new species of Finches came from a pre-existing seed-eating Finch. When the environment was favorable the Finches were herbivore and feed on seeds.
When the number of birds increases, there is a competition between them. Because the food source was limited. To prevent this competition
some of them go for different foods like insects, fruits, etc.
This food habit change also changes their morphology and separate them from their ancestor.
Similar manner, when draught condition occurs, some of the seed-eating birds become carnivore to survive this new climate. As the environmental condition continues for a long time, the number of carnivore animals will increase in number.
Because due to drought conditions, the availability of seed will decrease. Thus the carnivore birds will be more in number and the herbivore birds will gradually eliminate, as they can't cope with the new climate.
Deposition
The wind deposited the particles
Answer:
1- By eating a supplement that enhances the ability of red blood cells to transport oxygen, thereby reducing the oxygen dependence
2- By developing structures that help to support high pressures, thus improving the ability to breathe in deeper marine habitats
Explanation:
Recently, it has been shown that beneficial mutations provided to marine mammals a biological adaptation associated with a higher ability to transport oxygen in red blood cells when compared to terrestrial mammals. This adaptation enables marine mammals to breathe less frequently to obtain the same amount of oxygen.
In birds, the airflow is unidirectional (i.e., inhalation and exhalation are complete), rather than mammals where the air in and out of the lungs. This mode of respiration helps the birds to tolerate the high pressures during flight.
