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dish of bacteria are both alive, but cold outside. Our bodies do certain
they look very different. things to keep this temperature.
Some things, like sitting under a
shady tree on a hot day, are
conscious.
But in humans, and in many living
things, most are unconscious.
When it’s cold, you start to shiver
and the amount of blood going to
your body parts goes down. When
it’s hot, you begin to sweat. Doing
A dog and a dish this allows our body to make sure
of bacteria do not that no matter what it’s like
look similar, but outside, our body is about the
both are alive.
same temperature inside. This is
not only true about body
temperature.
There are many things about our
bodies that stay the same no
Luckily, there are some things that
matter what. Keeping a stable
tell us something is alive.
internal environment is something
all things do, and it is called
homeostasis.
All Living Things Keep a
Stable Internal
Environment All Living Things
Reproduce
The first thing all living things have
in common is that they keep things Reproduction is the process of
inside their bodies stable, or just creating new organisms, and is
about the same. another thing all living things do.
For example, think about our body During reproduction, one or more
temperature. You probably know living things (the parents) pass on
that if everything is going well, information, called traits, about
your body temperature stays at themselves to a new organism (the
about 98.6 degrees F (37 degrees offspring.) Traits control many of
C.) This is true whether it’s hot or the things about us, including our
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