Question and answer
What is the name for a fossil that is common to a particular period of geologic time and serves as an indicator for that time? A. coprolite
B. microfossil C. index fossil D. stromatolite
The answer is C. index fossil
Expert answered|jher000|Points 7504|
Question
Asked 7/24/2012 12:39:21 PM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
When is hurricane season in the United States? A. between January and June B. between June and November C. between November and January D. all year round
Question
Updated 258 days ago|8/16/2015 5:51:59 AM
1 Answer/Comment
The hurricane season in the United States is: between June and November.
Added 258 days ago|8/16/2015 5:31:09 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Andrew. [8/16/2015 5:52:00 AM]
who discovered that it is possible to alter a magnetic reading using an electric current?
Weegy: Oersted in Denmark (More)
Question
Expert Answered
Asked 7/23/2012 11:58:27 AM
0 Answers/Comments
Choose two consecutive sections of geologic time (for example, Triassic and Jurassic, or Cambrian and Ordovician). What distinguishes these periods from one another? What was going on geologically then? What kinds of plant and animal life were common during these periods?
Weegy: The Triassic–Jurassic extinction event marks the boundary between the Triassic and Jurassic periods, 199.6 million years ago,[1] and is one of the major extinction events of the Phanerozoic eon, profoundly affecting life on land and in the oceans. [ In the seas a whole class (conodonts)[2] and twenty percent of all marine families disappeared. On land, all large crurotarsans (non-dinosaurian archosaurs) other than crocodilians, some remaining therapsids, and many of the large amphibians were wiped out. At least half of the species now known to have been living on Earth at that time went extinct. This event vacated terrestrial ecological niches, allowing the dinosaurs to assume the dominant roles in the Jurassic period. This event happened in less than 10,000 years and occurred just before Pangaea started to break apart. In the area of Tübingen (Germany), a Triassic-Jurassic bonebed can be found, which is characteristic for this boundary.[3] Statistical analysis of marine losses at this time suggests that the decrease in diversity was caused more by a decrease in speciation than by an increase in extinctions. Several explanations for this event have been suggested, but all have unanswered challenges: Gradual climate change, sea-level fluctuations or a pulse of oceanic acidification[5] during the late Triassic reached a tipping point. However, this does not explain the suddenness of the extinctions in the marine realm. Asteroid impact, but so far no impact crater of sufficient size has been dated to coincide with the Triassic–Jurassic boundary. ] (More)
Question
Expert Answered
Asked 7/23/2012 12:16:37 PM
0 Answers/Comments
Which NASA mission sent a probe to collide with a comet's nucleus? A. Pioneer B. Apollo 11 C. Voyager D. Deep Impact
Question
Not Answered
Updated 87 days ago|2/2/2016 1:20:57 PM
1 Answer/Comment
Deep Impact mission sent a probe to collide with a comet's nucleus.
Added 87 days ago|2/2/2016 1:20:57 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Andrew. [2/2/2016 6:34:24 PM]
During which period did the first large herbivores and carnivores appear? A. Devonian B. Mississippian C. Pennsylvanian D. Permian
Question
Updated 9/3/2014 4:45:53 PM
1 Answer/Comment
During the PERMIAN period, the first large herbivores and carnivores appear.
Added 9/3/2014 4:45:53 PM
This answer has been added to the Weegy Knowledgebase
24,982,472 questions answered
Popular Conversations
What occurred while the surface rocks of the Moon were impacted, ...
Weegy: Bombardment by meteoroids formed the highlands t occurred while the surface rocks of the Moon were impacted, ...
4/29/2016 11:54:26 AM| 3 Answers
Who issued the "Grito de Dolores"? Vicente Guerrero Miguel ...
Weegy: When it was a French colony, Haiti was called St. Domingue. User: Simón Bolívar declared Brazil's ...
4/29/2016 1:50:52 PM| 3 Answers
Philosophical semantics is also known as _____. general ...
Weegy: Philosophical semantics is also known as GENERAL SEMANTICS. User: Frozen language occurs only in ...
4/29/2016 1:47:54 PM| 2 Answers
9/11 + 3/4 = User: 4/10 ÷ 1/3 =
4/29/2016 2:49:26 PM| 2 Answers
Tax incidence is concerned with:
Weegy: True! User: The term that describes how markets regulate themselves is known as:
4/29/2016 3:53:11 PM| 2 Answers
For place values that occur to the left of the decimal point, each ...
Weegy: For place values that occur to the left of the decimal point, each place value is ten times smaller than the ...
4/29/2016 6:27:04 PM| 2 Answers
A synonym is a word that has the same meaning as another word.
Weegy: A synonym is a word that has the same meaning as another word. TRUE. User: A synonym is a. A word that ...
4/30/2016 12:46:40 AM| 2 Answers
Weegy Stuff
S
Points 944 [Total 944] Ratings 23 Comments 694 Invitations 2 Offline
S
1
L
L
P
R
P
L
P
Points 300 [Total 12252] Ratings 2 Comments 270 Invitations 1 Offline
S
L
P
P
P
Points 231 [Total 3377] Ratings 0 Comments 231 Invitations 0 Offline
S
Points 147 [Total 147] Ratings 3 Comments 117 Invitations 0 Offline
S
Points 47 [Total 47] Ratings 4 Comments 7 Invitations 0 Offline
S
Points 43 [Total 56] Ratings 4 Comments 3 Invitations 0 Offline
S
Points 20 [Total 20] Ratings 2 Comments 0 Invitations 0 Offline
S
Points 20 [Total 52] Ratings 2 Comments 0 Invitations 0 Offline
S
Points 16 [Total 69] Ratings 0 Comments 16 Invitations 0 Offline
S
Points 14 [Total 19] Ratings 0 Comments 14 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.