The iris controls the amount of light entering the eye.
<span>b.) A more biodiverse ecosystem has a higher chance of adapting to species changes.
Hope this helps!
</span>
The process of natural selection is described in the cartoon.
Explanation:
Natural selection is the mechanism by which an organism survive and evolve.
It is the process in which organism have better adaptation to its environment and live to reproduce organisms with useful traits which are passed on to their offsprings.
In the given cartoon it is observed that green beatles fall prey to the crows as a result their survival chances are minimal. Over the generations they are eaten by crows and eventually their brown counterparts are in majority. This is because the brown colour beatles are safe from the prey, they pass on this trait to their offspring and remains safe and more in population.
The brown colouration in beatles is the Darwinian trait of survival of the fittest for beatles.
The variation in population, mutation or genetic drift causes natural selection.
The one with better adaptation survives and reproduce more viable offspring in the population.
1) This system makes your skin water-resistant. When you get wet, the water beads on the surface of your skin because of this system. The epidermis system within the integumentary system is what makes this happen.
2) It helps you maintain body temperature. Because of thermoregulation, your body maintains a steady temperature. If it didn't the chemicals in your body could be offset. Also, when your body temperature rises, your skin produces sweat that evaporates and works to cool you down.
<span>Increasing rates of work will increase the energy demand of the body. To fulfill the energy needs, the heart needs to pump more blood.
The rate of blood pumped by heart is known as cardiac output while stroke volume is the amount of blood pumped each contraction. It is calculated by: heart rate x stroke volume
The easiest variable to changed to increase the cardiac output would be heart rate. When a person increases his </span><span>rates of work, the heart rate will be increased to increases the cardiac output so the heart can supply the energy needed.</span><span>
</span>
