1. Why is it rare for the soft parts of an organism to become a fossil?
The soft parts take a long time to decay.
The soft parts can be eaten by other animals.
The soft parts cannot be buried in sediment.
The soft parts form petrified fossils.
2. Which of the following terms refers to a solid copy of the shape of an organism?
mold
cast
carbon film
trace fossil
3. Which of the following is an accurate definition of relative age?
a rock’s age as compared to the ages of other rocks
the number of years since the rock formed
a rock’s age based on how much carbon-14 it contains
the number of fossils a rock contains
4. Geologists use radioactive dating for which of the following?
identifying the relative ages of rock layers
determining the absolute ages of rocks
telling how radioactive a substance is
collecting evidence of fossils
5. Which of the following units are in order from smallest to largest?
epoch, period, era
era, epoch, period
period, era, epoch
epoch, era, period
6. Earth’s first atmosphere was composed of mainly which of the following gases?
hydrogen and helium
carbon dioxide and oxygen
nitrogen and oxygen
carbon monoxide and ozone
7. During the Cambrian explosion that began the Paleozoic era, the many new forms of life that evolved
lived on land.
were invertebrates that lived in the sea.
were vertebrates covered with scales or fur.
were single celled.
8. Which of the following occurred during the Mesozoic era?
the rise of reptiles
the rise of plants
the rise of invertebrates
the rise of mammals
9. Which of the following best describes the climates of Europe and North America during the 1.8 million years of the Quaternary period?
hot and dry
cool and rainy periods followed by droughts
warm and mild
a series of ice ages followed by periods when the glaciers melted
10. Which of the following statements about extinction is true?
Extinction can only be caused by human-induced activities.
Extinction can only be caused by natural activities.
Extinction can be caused by human-induced activities or natural activities.
Scientists do not know what causes extinction.
11. Which of the following organisms is an extinct animal that lived during the Ice Age? dodo bird
woolly mammoth
Tyrannosaurus rex
saltwater crocodile
I don't know if this will help now but for anybody that comes here to look for the answers...
1. B
2. B
3. A
4. B
5. A
6. A
7. B
8. A
9. D
10. C
11. B
12. False
13. True
14. False
100%
My Answers:
2.B
5.D
6.C
10.C?
11. A
What grade are you in and are you cheating?
No, theese are practice problems in my book. I never cheat.
I am just kidding. What grade stuff is this?
Oh, come on! Somebody. anybody, plz help me!!:(....
2. is correct
5. look at again
6.look at one more time.
10. YES! great job
11.no. close, but nope.
Princess, keep up the good work (:
and Heather I believe this is like 8th or 9th grade..