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.
D I think I hope this helped
Genetic modifications tamper with what would be normal genetics. Genetic modifications are upgrades in genetics whereas genetic sexual reproduction happens by normal means.
Answer:
2.25%.
Explanation:
The recombination progeny occur due to the crossing over of the homologous chromosomes. The linked gene is 30 map units apart and the recombination frequency is 30.
If a plant of Ab/aB is selfed then the progeny obtained is as follows: Ab – parental – 35%, aB – parental – 35%, AB – recombinant – 15% and ab – recombinant – 15%. The cross between the F2 progeny with aabb is ( 0.15 × 0.15) = 0.0225 or 2.25%.
Thus, the answer is option (A).
Answer:
Option 2, Salmon
Explanation:
Large fishes such as shark and sword fish have higher level of mercury. This fact can be explained by the concept of bio magnification in which an individual lying at a higher trophic level in a food chain gets accumulated toxin and hence possess the highest amount of toxin in a given food chain. Small fish such as salmon will have the lowest amount of mercury as they lie at the lower level of a food chain and hence possess a small amount of toxin
