External Respiration takes place in the Trachea. When oxygen and co2 "switch" its where they connect and making this external respiration!
I hope this helps you!
its geocentric cause Ptolemy supported the idea of the geocentric model
Answer:
Bryophytes is a small flowerless green plant of the division Bryophyta, which comprises the mosses and liverworts.
Any two characteristics of pteridophyts are:
They are seedless, vascular plants that show true alternation of generations.
They reproduce by spores, which are developed in sporangia.
Photosynthesis and cellular respiration are important components of the carbon cycle, in which carbon is exchanged among the biosphere, atmosphere, oceans, and geosphere through chemical, physical, geological, and biological processes.
