Alex is a 22-year-old professional soccer player who trains several hours a day, seven days a week. To ensure she is meeting her nutritional needs during this time in her life, she should completely eliminate sugar from her diet to give her more energy for playing soccer
lower her daily calorie intake so she develops more lean muscle for playing soccer
make sure her calorie intake is higher than average because of the extra energy she is using for soccer
only drink water during training and game time to make sure she is staying hydrated

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.