Identify and discuss 2 key factors that have led to the emphasis on evidence-based practice in physical therapy. How would you explain to someone else what evidence-based practic

Margaret runs an animal shelter and would like to know how many animals are in
her care. She has 25 dogs, 17 cats, and 15 rabbits. Using the syntax from R,
create 3 variables called cats, dogs, and rabbits and assign the variables the
correct amounts (Ex. If she also had 22 sheep, the variable would be sheep <-
22). Now, create a composite variable called animals which adds up the number
of cats, dogs, and rabbits in the shelter. complete RStudio code with this info