enSC7th Science - Chapter 621
fossil record: made up of all the fossils ever discovered on Earth
mold: impression of an organism in a rock
cast: a fossil copy of an organism in a rock
trace fossil: preserved evidence of the activity of an organism
geologic time scale: chart that divides the Earth's history into different time units
isotopes: atoms of the same element that have different numbers of neutrons
extinction: occurs when the last individual organism of a species dies
biological evolution: change over time in populations of related organisms
naturalist: a person who studies plants and animals by observing them
convince: to overcome by argument
variation: slight difference in an inherited trait of individual members of a species
natural selection: process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations
adaptation: inherited trait that increases an organism's change of surviving and reproducing in its environment
camouflage: an adaptation that enables a species to blend in with its environment
mimicry: resemblance of one species to another species
selective breeding: breeding of organisms for desired characteristics
comparative anatomy: study of similarities and differences among structures of living things
homologous structures: body parts of organisms that are similar in structure and position but different in function
analogous structures: body parts that perform a similar function but differ in structure
vestigal structures: body parts have lost their original function through evolution
embryology: science of the development of embryos from fertilization to birth
7th Science - Chapter 6
1. LSOANAENETIRUTLC
process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations
2. APDTAONAIT
inherited trait that increases an organism's change of surviving and reproducing in its environment
3. ROMEOUSTUGSOSTLOHUCR
body parts of organisms that are similar in structure and position but different in function
4. RITVAAONI
slight difference in an inherited trait of individual members of a species
5. TNMRAOETAAPCYVIMAO
study of similarities and differences among structures of living things
6. MAOFUALCEG
an adaptation that enables a species to blend in with its environment
7. TUOLUORASCSGENTARUS
body parts that perform a similar function but differ in structure
8. OSESIOTP
atoms of the same element that have different numbers of neutrons
9. OOMLYBEGYR
science of the development of embryos from fertilization to birth
10. LOGESTGCIEOMCEALI
chart that divides the Earth's history into different time units
11. ITTESGSUCRRTEALVUS
body parts have lost their original function through evolution
12. CIXNOTTIEN
occurs when the last individual organism of a species dies
13. URIANLTATS
a person who studies plants and animals by observing them
14. AVIOUOEIBNOOLTICLLG
change over time in populations of related organisms
15. ODSCLRIOESFR
made up of all the fossils ever discovered on Earth
process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations
N
A
T
U
R
A
L
S
E
L
E
C
T
I
O
N
2. APDTAONAIT
inherited trait that increases an organism's change of surviving and reproducing in its environment
A
D
A
P
T
A
T
I
O
N
3. ROMEOUSTUGSOSTLOHUCR
body parts of organisms that are similar in structure and position but different in function
H
O
M
O
L
O
G
O
U
S
S
T
R
U
C
T
U
R
E
S
4. RITVAAONI
slight difference in an inherited trait of individual members of a species
V
A
R
I
A
T
I
O
N
5. TNMRAOETAAPCYVIMAO
study of similarities and differences among structures of living things
C
O
M
P
A
R
A
T
I
V
E
A
N
A
T
O
M
Y
6. MAOFUALCEG
an adaptation that enables a species to blend in with its environment
C
A
M
O
U
F
L
A
G
E
7. TUOLUORASCSGENTARUS
body parts that perform a similar function but differ in structure
A
N
A
L
O
G
O
U
S
S
T
R
U
C
T
U
R
E
S
8. OSESIOTP
atoms of the same element that have different numbers of neutrons
I
S
O
T
O
P
E
S
9. OOMLYBEGYR
science of the development of embryos from fertilization to birth
E
M
B
R
Y
O
L
O
G
Y
10. LOGESTGCIEOMCEALI
chart that divides the Earth's history into different time units
G
E
O
L
O
G
I
C
T
I
M
E
S
C
A
L
E
11. ITTESGSUCRRTEALVUS
body parts have lost their original function through evolution
V
E
S
T
I
G
A
L
S
T
R
U
C
T
U
R
E
S
12. CIXNOTTIEN
occurs when the last individual organism of a species dies
E
X
T
I
N
C
T
I
O
N
13. URIANLTATS
a person who studies plants and animals by observing them
N
A
T
U
R
A
L
I
S
T
14. AVIOUOEIBNOOLTICLLG
change over time in populations of related organisms
B
I
O
L
O
G
I
C
A
L
E
V
O
L
U
T
I
O
N
15. ODSCLRIOESFR
made up of all the fossils ever discovered on Earth