17. How can confounding variables make testing, say mussels on a shoreline, difficult? Marine science?

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Which feature would you expect to find in a population in which sexual selection depends on male competition?

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.