The former means those most fit, those with the best set of skills and features for the given environment, will live to pass on the said features in the offspring (with ants, for example, being incredibly fit and adaptable creatures). The latter suggests there is an objective way to measure the "meaningfulness" of each species and having only those most meaningful survive. But this differs from species to species - for a house cat, the great white shark is utterly meaningless.
Also, the meaningful animal has no actual advantage over another to help him survive, whereas fittness is exactly that - it is the ability to survive, ability to pass on your genes.
While I understand it may seem so in the case of domestic animals that the most meaningful to the human are those allowed to reproduce, it is actually the same law: those most adapted for human purpose (which, of course, in the given case means the most meaningful) ARE the fittest here in the human-controlled environment.
Answer: You have to perform cellular respiration.
Explanation: Every living cell or organism has to turn fuel into energy through the form of cellular respiration where you take sugar, turn it into energy, and use it.
C₆H₁₂O₆ is glucose.
Glucose is a carbohydrate, because it's a sugar
If their first child is girl it's a carrier and if their first child is boy it's a colour blind
