Science 5

Question 1

The process by which the distribution of traits in a population
changes over many generations.

Answer 1

Natural Selection

Question 2

A part of an organism (for example, one or more bones)

Answer 2

Body structure

Question 3

A group of organisms of the same kind (in one or more
populations) that do not reproduce with organisms from any other group.

Answer 3

Species

Question 4

A body structure in two or more species that features the
same parts (for example, the same bones).

Answer 4

Shared Structure

Question 5

The process by which species adapt to environmental
changes over a very long time.

Answer 5

Evolution

Question 6

An older population from which two or more
newer species descended.

Answer 6

Common Ancestor Population

Question 7

A more recent species that evolved from an
ancestor population.

Answer 7

Descendant Species

Question 8

The process by which one population evolves into two or
more different species.

Answer 8

Speciation

Question 9

The very long time that spans the history of Earth, from the
very first cellular life to the present.

Answer 9

Evolutionary Time

Question 10

Species inherit their ________ from their ______ populations.

Answer 10

Body structures, Ancestors

Question 11

Body _____ that are _____ between two species are
_______ that these two species ________ the shared structures
from a common _______ ________.

Answer 11

Structures, Shared, Evidence, Inherited, Ancestor Population

Question 12

In _________ separated into different _________, __________ ____________causes different changes to happen to each population. This causes ___________ species to end up with differences in their shared ___________.

Answer 12

Populations, Environments, Natural Selection, Descendant, Structures,

Question 13

When the ___________ is mostly the same over time, body structures stay _________. When the environment changes over time, body structures may _______ due to __________ .

Answer 13

Environment, Stable, Change, Natural selection

Question 14

Over many _________ and very long periods of time, many small changes
can build up to large __________ in body _________.

Answer 14

Generations, Differences, Structures

Question 15

Among any three __________, the two _________ that separated most ___________ are the most ____________ related to each other

Answer 15

Species, Species, Recently, Closely

Question 16

When two _______ share a __________ that is not shared with a __________ species, this can be evidence that the first two species are more closely __________ to each other than to the _________ species

Answer 16

Species, Structure, Third, Related, Third