Question

When will a fossil be used in finding the absolute age of rocks?(1 point)
Responses

if it existed for a limited period of time and in a wide area
if it existed for a limited period of time and in a wide area

if it existed for a long period of time and in a wide area
if it existed for a long period of time and in a wide area

if it existed for a limited period of time and in a small area
if it existed for a limited period of time and in a small area

if it existed for a long period of time and in a small area
Answer

2 of 42 of 4 Items
Question
Which quantity helps determine the absolute age of rocks and fossils?(1 point)
Responses

the ratio of carbon-12 to carbon-14
the ratio of carbon-12 to carbon-14

the ratio of protons to neutrons in carbon-14
the ratio of protons to neutrons in carbon-14

the difference between the amounts of carbon-12 and carbon-14
the difference between the amounts of carbon-12 and carbon-14

the difference between the number of protons and neutrons in carbon-14
Answer

3 of 43 of 4 Items
Question
Which statement best describes why most individual organisms never fossilized?(1 point)
Responses

Only organisms with hard parts fossilize.
Only organisms with hard parts fossilize.

Only organisms that lived in the ocean fossilize.
Only organisms that lived in the ocean fossilize.

Conditions for fossilization are rare.
Conditions for fossilization are rare.

Chemicals that fossilize organisms are rare.
Answer

4 of 44 of 4 Items
Question
Use this paragraph: The half-life of carbon-14 is 5,700 years. A certain sample of wood has 20 grams of carbon-14 when it is alive.

How many grams of carbon will it have after 5,700 years?

(1 point)
Responses

40 grams
40 grams

5 grams
5 grams

2 grams
2 grams

10 grams
Answered by GPT 3.5
if it existed for a long period of time and in a wide area
Answered by GPT 3.5
the difference between the amount of carbon-12 and carbon-14
Answered by GPT 3.5
Conditions for fossilization are rare.
Answered by GPT 3.5
10 grams