Thames & Kosmos Kids First: Biology Lab (V 2.0) handleiding
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25
Detectives on the Trail
I
There are scientists who claim that the
number of microorganisms living on and
inside a human body is greater than the
number of all of the body’s cells. Collectively,
all of these microorganisms, which include
bacteria and fungi, are known as the skin
flora. But don’t worry! These little
“roommates” are a natural part of the surface
of healthy skin. Almost all of these living things
are not harmful to us. In fact, many of them
even help protect us from harmful pathogens.
And in any case, our body possesses a lot of
defense mechanisms against any microorganisms that
might cause diseases or otherwise be out to harm us.
The close biological relationship
between mites and spiders is
suggested by the number of
legs they each have. Under
the microscope, you can see
that mites have eight legs,
like spiders. Along with
scorpions, spiders, and ticks,
mites belong to a family known
as arachnids. True insects, by
contrast, have just six legs.
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Productinformatie
| Merk | Thames & Kosmos |
| Model | Kids First: Biology Lab (V 2.0) |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 24679 MB |
