Which body feature do ultramarathon runners count on to give their muscles fuel for endurance? Group of answer choices Toned ligaments and tendons Healthy cartilage Stronger long bones Richer blood supply

An ultra-marathon can also be defined as a running competition ... World records in female elite and age group athletes in distance-limited races, from ... as skeletal muscle mass, body fat and running training were examined in ... for a long time, and do not make any tempo changes

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

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the answer is "a.) well–developed vascular system."

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