When beginning a cardiorespiratory training regimen, it's best to plan for sessions per week.
a. two to three
b. one to two
c. five to seven
d. three to five

i think it's d, but am not sure.

In 2009, a flu pandemic was believed to have originated when viral transmission occurred from pig to human, thereby earning the designation, "swine flu." although pigs are thought to have been the breeding ground for the 2009 virus, sequences from bird, pig, and human viruses were all found within this newly identified virus. what is the most likely explanation of why this virus contained sequences from bird, pig, and human viruses? a) the virus was descended from a common ancestor of bird, pig, and human flu viruses. b) the infected individuals happened to be infected with all three virus types. c) related viruses can undergo genetic recombination if the rna genomes mix and match during viral assembly. d) the human was likely infected with various bacterial strains that contained all three rna viruses.

Genetic therapy and engineering . have no value for our future b. have been used for many years to prevent genetic diseases c. are simple procedures that most doctors can perform d. are controversial scientific procedures

We need to talk i am going through a lot