Muscles are the tissues which pull our skeleton so
we can move. The heart is also a muscle.
A drug that makes people sleepy is called a narcotic.
drug, heroin, medicine
Narcotic medicines can be dangerous. They can only be prescribed by doctors.
A natural object or material
has not been interfered with
The biceps muscle makes the arm bend. The triceps muscle straightens the arm.
in any way by people.
Mushrooms are a sort of fungus.
Many people eat them.
The sweet sticky liquid inside a ﬂower is nectar.
It attracts bees, which turn the nectar into honey.
Some mushrooms are good to eat, but many
wild mushrooms are poisonous.
Animals with many legs are members of the
myriapod group. Nerves are the long thin tissues that
send messages around our body. spinal cord
All myriapods are part of
the arthropod group.
Nerves run to all parts of the body.