Mike wants to improve his endurance because he wants to try out for the cross country running team in the fall. he works out at the local gym a few days each week and does a variety of activities, but he still feels like his cardiovascular fitness needs improvement. what would be the best thing for mike to do next?

Adisease in which scar tissue replaces healthy liver tissue

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.

Waste is deposited into in thin layers which are then compacted and covered with soil.