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The Natural materials are nothing but the materials which obtain from the nature like plants, animals or from the ground. Some of the natural materials are may be bamboo, bark, wool, silketc..,
food
It's used by internal physiological mechanisms of several species of insects, fish, birds, and animals. When used by humans, we don't have those physiological mechanisms, or at least if we have them we don't know how to use them, so we use the magnetic compass.
We know that reptiles have lungs, just like many other animals do.
Growth do not depend in increase in the size of cell.Main thing is they replicate to increase the number of cells.
All plants and animals have mechanisms that repair their bodies and reproduce.
Animals need control mechanisms to do things without thinking. They digests food, breath and walk without thinking about things completely.
materials
by water, air and animals
There are many types of animals int his world. The exchange of animals is when a pet store or a person sells an animal to another person.
Both animals & plants get there raw materials from the sunlight! :)
== == materials get into water by animals waste
All animals get the materials from outside the body. They ingest them by eating.
The Columbian Exchange was the exchange of American and European animals, plants, and diseases.
The Columbian Exchange was the exchange of American and European animals, plants, and diseases.
The Columbian Exchange was the exchange of American and European animals, plants, and diseases.
O2 in and CO2 out for animals, and the opposite for plants.