How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
Ruth - Science Chapter 3
Vocabulary for Unit 3
one of a kind
a wide range of unique features in a group
an organism that lives in or on another organism, acquiring materials from it and harming it
the development of an offspring inside its mother's body before being born
to find the way from one place to another
to navigate or locate objects by sending out and receiving sounds
a chemical substance that is released by an organism for the purpose of communication and behavioral change
to grow and reproduce
no longer existing
a species that is nearly extinct
the physical remains or imprint of an organism that lived in the distant past
a developmental change in shape or form of an animal