Data manipulation

1. Load the data set from the file surveys.csv into R using the function read.csv().
2. Use select() to create a new data frame object called surveys1 with just the year, month, day, and species_id columns in that order.
3. Create a new data frame called surveys2 with the year, species_id, and weight in kilograms of each individual, with no null weights. Use mutate(), select(), and filter() with !is.na(). The weight in the table is given in grams so you will need to create a new column called “weight_kg” for weight in kilograms by dividing the weight column by 1000.
4. Use the filter() function to get all of the rows in the data frame surveys2 for the species ID “SH”.