Answer:
variation
Explanation:
Genetic variation is what makes us all unique as a result of subtle changes in our DNA. The Theory of Evolution is a process in which organisms change over time as a result of adapting to their environment. Charles Darwin came up with the term Survival of the fittest, in any environment plants and animals from the same species show natural variation in their physical characteristics, like neck lengths in giraffes. Darwin suggested that the plants and animals best suited to the environment will survive and pass on their characteristics to their offspring. Over time, the characteristics of the surviving members of the species will become predominant.
Example: Peppered moth
In London in the 1800's, 98% of peppered moths had light colored bodies and only 2% were dark. The light moths were the same color as the trees so they could easily hide from hungry birds and not get eaten. The dark moths however were easy to see and were eaten. Then came the factories and smoke of the industrial evolution and many trees turned black with soot and suddenly the dark moths were able to survive better as they now looked like the trees and the light colored moths were easier to spot and eat. By 1895 the dark peppered moths made up 95% of the population and the light colored moths only 5%. This is an example of natural selection, because of the gene that makes the moths dark, it allowed them to flourish when the environment changed, they adapted, reproduced and survived.
Emperor penguins have the ability to 'recycle' their own body heat. The arteries and veins lie close together so that blood is pre-cooled on the way to a penguin's feet, wings and bill and warmed on the way back to the heart. Emperors' feet are adapted to the icy conditions
Answer:
Several factors can affect the rate of photosynthesis: light intensity. carbon dioxide concentration. temperature.
Explanation:
No, They find the alone one because they are easier to catch when away from the tribe. They are easier to kill when they are old and sick, or weak.
The diastolic pressure refers the two values are recorded during the measurement of blood pressure.It is the number or the bottom number indicates the pressure in the arteries when the heart rests between beats.
Less then 80 are the normal diastolic blood pressure. Prehypertension which is indicaated by the blood pressure between 80 to 90. The first, systolic pressure, which represents the peak arterial pressure during systole. The second, that represent minimum arterial pressure during diastole.
the force the heart exerts on the walls of the arteries in between beats can be easily measured by the diastolic blood pressure .Diastolic blood pressure is mainly determined by the total arterial peripheral resistance which majorly influence Arterial elastance and compliance.
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