The salmon is a key player in the food web whose removal may cause an imbalance in the whole ecosystem.
<h3>What is a food web?</h3>
A food web is a graphical diagram representing all connections between organisms in a given ecosystem.
Salmon represent the food for different types of animals in a food web, thereby their removal may cause serious harm to the balance of the ecosystem.
Salmon fish is a tertiary consumer because they eat herring which in turn eat zooplankton that eats phytoplankton.
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There are specific methods to be used when measuring the rate of diffusion over a membrane.
In order to accurately measure the rate of diffusion for water through this permeable membrane you need to account for:
- The difference in pressure
- The surface area of the membrane
- The diffusion barrier
It would be correct to state that the speed at which any movement of water occurs is dependent on the pressure being exerted onto the water. This means that when attempting to calculate the rate of diffusion we need to account for the pressure difference. This pressure will be caused by the osmotic gradient.
You will also need to account for the surface area of the membrane and the diffusion barrier. The <u>surface area </u>of the membrane allows us to understand how much <u>space </u>the water has to be able to move from one side to the other. Meanwhile, the <u>diffusion barrier </u>tells us how much <u>resistance </u>the water will have to overcome when diffusing.
By taking all of these parameters into account, we can then use Fick's law to accurately calculate the rate of diffusion for the water and therefore the amount of water that is diffusing through the membrane.
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Answer:
<u><em>The correct option is C) genetic variation</em></u>
Explanation:
Genetic variation can be described as the differences present in the genetic material i.e DNA of organisms present in a population. Genetic diversity allows organisms of a species to better adapt to an environment. A population in which the genetic variability is scarce might become wiped out by a disease or an invading predator.
As the birds show different variations hence the term that best described them is genetic variation.
Hostility is the emotion particularly related to Coronary Heart Disease. Hostility by definition is having stable attitude of harboring ill-feelings and negative perception towards others and even on events. According to some literature, purely speculative in nature since the researchers weren't able to measure them,such predictive effect of hostility towards CHD is brought about by elevation of stress hormones and other factors.
(a) very frequent use of something so that it stops being effective; an over-use.