All wild birds of the same species sing the same song. how do the birds learn their species song?

The body is protected against harmful flu viruses by

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.

asap plz when a charge is dropped from a felony to a misdemeanor, which type of plea bargain has happened? ? a. vertical b. horizontal c. avoidance of stigma d. reduced sentence