What is the tube that connects the mouth and nasal cavity to the lungs

When a doggo starts to pace around in the same line for a hand full of days. what would that mean?

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources

In a scientific investigation, what is the name for a prediction that can be tested? a. conclusion b. evidence c. hypothesis d. verification