Which feature of nuclear fission reactions allows these reactions to take place in a chain reaction? Thermal energy is released and heats up the reactants.

More smaller atoms form that can undergo fission.

A larger atom is formed, which can then be split.

Neutrons start the reaction and are released during it.

How can dna be useful in phylogeny? a. dna sequences are rearranged to predict how species could evolve in the future. b. dna sequences from different species can be compared, giving us more information about their evolutionary relationships. c. dna from every organism in a clade is sequenced to identify genetic mutations that have occurred. d. dna isn't useful in phylogeny, as morphological characteristics are used exclusively in phylogeny.