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earthworms.
Gas exchange takes place at a respiratory surface-a boundary between the external environment and the interior of the organism.
There is definitely a relationship between an animal's gas exchange system and the environment. The animal gives the plant carbon dioxide and takes oxygen from the plant.
The gas exchange between fungi and their environment occurs underground, at any time of the day. They absorb oxygen from the microscopic pockets in the soil.
Our body is made up of prokaryotic cells. These cells are not in the contact with the environment. So the process of diffussion cant make any difference in exchange of gasses between the multicellular boy and environment.
Gases must first dissolve in a fluid in order to diffuse across a membrane. All gas exchange systems require a moist environment.
It is called wrapped tissues
Gills
Stomata is a tiny opening or pore, found mostly on the under-surface of a plant leaf. It is responsible for gaseous exchange between the leaves of plants and the environment.
by allowing them to diffuse through the cell membrane
The Process of gas exchange is called Respiration
Yes. Of course there are ducks in Africa! There are quite a number of species that differ from environment to environment. Although wikipedia isn't a trusted encyclopedia, I googled "African Ducks" and it came up with this link. http://en.wikipedia.org/wiki/African_Black_Duck