Allele frequency:
Number of times an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
Fitness is the answer.
Evolution is the process of a species changing.
Mutation is also a species changing.
Variation is the differences between animals of the same species.
Answer:
The reason why the abundance of the mammals be successful is that it provides food and oxygen for the survival of the mammals.
These plants also attract the mammals which helps in mating of the animals and producing more offspring.
A healthy animal will only lead to the producing more healthy offspring and by getting proper food the animals will produce successful offspring.
