There are ten of these in a centimeter
millimeter
There are 100 of these in a meter.
centimeter
The smallest parts in living things.
cell
Something really ugly or scary.
horrible
boys and men
male
to take something with your hand quickly
grab
Something you can see everywhere.
common
The opposite of thick / fat
thin
Something you use to look at really small things.
microscope
organism
an animal, plant or living thing
girls and women
female
A place where animals live.
habitat
You and I
human