The finches may have speciated from the Galápagos finch and now occupy different habitats.
<h3>What is speciation?</h3>
The term speciation has to do with a type of evolution that gives rise to new organisms from existing ones. It is common in the world today. These ne organisms all tend to coexist with each but may not be on the same habitat.
For instance, the finches may have speciated from the Galápagos finch and now occupy different habitats.
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Because the heart has a very important task for the body, it follows a cycle called the cardiac cycle. The intervening pauses allows the blood to be emptied out completely from the atria and transferred to the ventricles before the ventricles finally pumps out the blood.
There are two cell divisions in meiosis ( Meiosis 1 and Meiosis 2). It has the same thing as mitosis but it happens twice.
Factors affecting photosynthesis
Three factors can limit the rate of photosynthesis: light intensity, carbon dioxide concentration and temperature.
Light intensity
Without enough light, a plant cannot photosynthesise very quickly - even if there is plenty of water and carbon dioxide. Increasing the light intensity will boost the rate of photosynthesis.
A graph with rate of photosynthesis on the y axis and light intensity on the x axis. The plotted line rises steeply and then levels off to horizontal.
Carbon dioxide concentration
Even if there is plenty of light, a plant cannot photosynthesise if there is insufficient carbon dioxide.
A graph with rate of photosynthesis on the y axis and light intensity on the x axis. The plotted line rise steeply and then levels off to horizonal. During the steep part light is the limiting factor. During the horizontal part another factor has become limiting.
TemperatureIf it gets too cold, the rate of photosynthesis will decrease. Plants cannot photosynthesise if it gets too hot.
A graph with rate of photosynthesis on the y axis and carbon dioxide concentration on the x axis. The plotted line rise steeply and then levels off to horizonal. During the steep part carobn dioxide is the limiting factor. During the horizontal part another factor has become limiting.
If you plot the rate of photosynthesis against the levels of these three limiting factors, you get graphs like the ones shown above.
In practice, any one of these factors could limit the rate of photosynthesis.