Answer:
The ten percent rule, also known as the law of ecological tithe, has to do with the effective transfer of energy that occurs at different trophic levels, corresponding to the use of one tenth of the energy from the immediate previous level.
Explanation:
The 10 percent rule was established by the english naturalist Charles Sutherland Elton, indicating that the <u>transfer of energy from one</u><u> trophic level</u><u> to another is only 10 percent</u>. This means that the level immediately above can only use one tenth of the energy produced by the level before it.
<h3>What percentage of energy a dolphin would have after it ate a fish, that ate an insect, that ate some grass?</h3>
For example, if we say that grass produces 10000 Kcal, the insect that consumes it (primary consumer) will be able to use 1000 Kcal, the fish that consumes insects 100 Kcal and the dolphin that consumes the fish only 100 Kcal.
<em>Grass → Insect → Fish → Dolphin</em>
<em>10000 1000 100 10</em>
In the end the dolphin, a tertiary consumer, will only be able to produce 10 Kcal, when in the food web the producer had 10,000 Kcal.
The 10 percent rule is not entirely accurate, since the effective transfer can be less or more than 10 percent. However, in most cases, the average energy transfer is around 10%, which complies with the rule.
Answer:
An example of survival of the fittest would be a sick moose versus a pack of wolves, the wolves are strong, fit and driven by hunger. The moose is sick and close to death, Clearly the wolves will win. Sadly I don't exactly understand evolution so I cant help with that part. Sorry.
Explanation:
When you apply heat with a certain temperature on a substance, it may change state.
For example, pure water boils at 100°C, water changes from liquid to gas, that's a change of state, it only happens if the heat u applied is over or at 100°C.
Answer:
Rabbits and snakes increase in number but grasses decrease in number.
Explanation:
If the population of hawk is decreases to half then the population of rabbits and snakes increases because hawk feeds on rabbits and snakes. The amount of grasses also decreases due to increase in the population of rabbits which feeds on these grasses. Hawks controls the population of rabbits and snakes when these hawks are decrease in number then the ecosystem will destabilize by increasing number of rabbits and as a result vegetative cover decreases quickly.
