Nitrogen is changed into which substances before being used by living things

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Brian made this table to organize his notes on changes of state change of state energy change melting gain freezing lose deposition gain condensation lose

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.