I would say to be safe age 11.
Having one theory is setting a limit on your potential and the potential of the overall theory and subject you are working on. Having multiple theories gives you a broader idea and perspective of what is going on, and even though one may slightly contradict the other, it is okay because that is what theories are for.
To the point, scientists usually have more than one theory so that they can gain a broader perspective on the matter and maybe even increase the chance of being correct on the matter.
Hope this was helpful.
Cheers,
Answer:
Option A. Steak, is the correct answer.
Explanation:
Steak is the food substance that contains the material which is needed to build muscles in the human body , but does not contain the macromolecules that provides quick energy. Steak is a type of meat which is a good source of protein and protein is the main nutrient which is responsible for the building of muscles in the human body.
The offspring that will be produced in the cross would have tortoiseshell fur.
<h3>X-linked traits</h3>
In cats, the male is XY while the female is XX.
Assuming that black fur is caused by the allele B and the orange fur is caused by A
A black female will have the genotype 
An orange male will have the genotype 
Crossing the two: x
Offspring: 
, 
, , and
= tortoiseshell fur female
= tortoiseshell fur male
More on x-linked traits can be found here: brainly.com/question/11189684
