Transcript LIFE CHANGES OVER TIME STUDY GUIDE

“LIFE CHANGES
OVER TIME “
STUDY GUIDE
1
A _______ is a group of
organisms that look
alike and can reproduce
among themselves.
2
________ is the process
by which species change
over time.
3
An ________ is a
feature or trait that
helps an organism
to live in a
certain environment.
The giraffe’s neck has
grown longer over time so
it can eat leaves that grow
at the tops of trees.
4
A sudden change in a
gene is called a _____.
It can be harmful
or helpful .
This albino snake’s
mutation makes it
more vulnerable to
predators.
5
Animals or plants that no
longer exist are said to
be_________.
Animals like this
dinosaur no longer
live on earth
because they’re
extinct.
6
_______ are the
remains or traces of
once-living organisms.
7
_______ is fossilized
tree sap in which ancient
insects are sometimes
preserved.
8
__________ are body parts
that have the same basic
structure like the arm of a
human, the leg of a cat, the
flipper of a whale, or
the wing of a bat.
9
____________ are
body parts that seem to
have no function like a
human being’s appendix.
10
Darwin’s theory of
____________ is that
offspring with the most
favorable traits
survive and reproduce.
11
Differences in traits
among organisms in a
species is called
_______.
There are
variations in the
color of these
Sweet William
flowers.
12
_________ is the
study of human
beings.
13