Question and answer
Ancient cyanobacteria released ______, which assisted in creating the atmosphere as we know it today. A. hydrogen B. oxygen C. lead D. ore
A. hydrogen
Get an answer
Original conversation
User: Ancient cyanobacteria released ______, which assisted in creating the atmosphere as we know it today. A. hydrogen B. oxygen C. lead D. ore

Weegy: A. hydrogen
nairos|Points 200|

User: The combination of sulfur dioxide, nitrogen oxide, and atmospheric moisture creates

Weegy: The combination of sulfur dioxide, nitrogen oxide, and atmospheric moisture creates c. Acid rain
hersheys|Points 284|

User: Geologists have divided Earth's history into time units, which are largely based on

User: Geologists have divided Earth's history into time units, which are largely based on A. oral histories. B. fossils. C. climates. D. written correspondences

Weegy: Geologists have divided Earth's history into time units, which are largely based on fossils. [ ]
wisbest|Points 2751|

User: A natural resource that is mined for profit is called

User: What is the oldest and most stable part of a continent

Weegy: Cratons are the oldest and most stable parts of the continental lithosphere and shields are the exposed area of a craton(s).
Expert answered|arcaisme|Points 10|



Question
Asked 8/9/2013 11:59:45 AM
0 Answers/Comments
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
Elias Howe invented which of the following?
Weegy: Elias who? can you please give me his surname. thank you User: Elias Howe invented which of the following? A. The mechanical reaper B. The steel plow C. The sewing machine D. A method for vulcanizing rubber Weegy: Elias Howe invented A. The sewing machine User: The largest of the five so-called "civilized tribes" was the A. Creek. B. Choctaw. C. Cherokee. D. Seminole. Weegy: D. Cherokee User: In the Old South, the majority of slaves A. lived on plantations with 100 or more slaves. B. worked under a task system. C. lived on small farms. D. lived on plantations with 20 or more slaves Weegy: In the old South the majority of slaves lived on plantations of 20 or more. Over half of all slaves lived on plantations with 20 or more slaves and a quarter lived on plantations with more than 50 slaves. [ ] User: Which of the following utopian communities was founded and established in New York State? A. Shaker Village B. Spiritualist C. Oneida D. New Harmony Weegy: Oneida is a Utopian community that was founded and established in New York State. ***John Humphrey Noyes established the Utopian community known as the Oneida in New York city in 1848. [ The community is named after the city of the same name in New York. ] User: John Marshall's 1803 decision in Marbury v. Madison A. established the principle of judicial review. B. established the principle of state sovereignty. C. found in favor of Marbury. D. was repudiated by Thomas Jefferson Weegy: John Marshall's 1803 decision in Marbury v. Madison D. established the principle of state sovereignty. User: During Jefferson's presidency, cities were A. mostly the haunts of thieves and degenerates. B. mainly industrial centers. C. mostly found along the Mississippi. D. mainly ports for international trade Weegy: During Jefferson's presidency, cities were mainly ... (More)
Question
Expert Answered
Asked 8/6/2013 5:22:32 PM
0 Answers/Comments
A glacier that covers a wide area is called a _______ glacier. A. continental B. cirque C. moraline D. valley
Weegy: : A glacier that covers a wide area is called a B. cirque glacier. User: The most easily polluted groundwater reservoirs are A. sewage plant reservoirs. B. artesian wells. C. salt reservoirs. D. water-table aquifers Weegy: Pollution in Groundwater In general, the most easily polluted groundwater reservoirs are water-table unconfined aquifers. The answer is letter D. User: The most easily polluted groundwater reservoirs are A. sewage plant reservoirs. B. artesian wells. C. salt reservoirs. D. water-table aquifers Weegy: Pollution in Groundwater In general, the most easily polluted groundwater reservoirs are water-table unconfined aquifers. The answer is letter D. User: Which gas is a source of natural groundwater pollution? A. Carbon B. Radon C. Oxygen D. Hydrogen Weegy: Radon gas is a source of natural groundwater pollution. The answer is letter D. Radon gas is a radioactive product of the decay of naturally occurring uranium in the Earth's crust. [ Groundwater entering a house through a home water-supply system might release radon indoors where it could be breathed. ] User: Which gas is a source of natural groundwater pollution? Weegy: Radon gas is a radioactive product of the decay of naturally occurring uranium in the Earth's crust. [ Groundwater entering a house through a home water-supply system might release radon indoors where it could be breathed. Read more: ] User: Which of the following soil types is richest in organic material? A. Dark-colored soil B. Blue soil C. Red soil D. Yellow soil Weegy: A Dark-colored soil is a type of soil that is rich in organic material. [ ] (More)
Question
Expert Answered
Asked 8/8/2013 12:24:49 PM
0 Answers/Comments
17,604,795 questions answered
Popular Conversations
The pressure of ocean water increases as depth increases. User: The ...
Weegy: It originates in the Gulf of Mexico and, as the Florida Current, passes through the Straits of Florida and then ...
9/30/2014 6:27:02 AM| 3 Answers
The densest ocean water is generally found a. in the surface ...
Weegy: A. in the surface zone User: In which zone is ocean temperature most affected by the weather? a. transition ...
9/30/2014 6:07:25 AM| 3 Answers
What is one way to describe elements? A. They are the smallest ...
Weegy: A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic ...
9/30/2014 5:22:18 PM| 2 Answers
simplify x(2x + 3) + (x - 3)(x - 4)
Weegy: 12 + 3(2x - 3) + 4. = 12 + 6x - 9 + 4; = 6x + 7
9/30/2014 2:50:25 PM| 2 Answers
6p - 21 = 3p - 12 A. 1 B. 3 C. –3 D. –1 ...
Weegy: 3-3 = 0 User: 78 = -2(m + 3) + m A. –28 B. –42 C. –72 D. –84
9/30/2014 1:26:57 PM| 2 Answers
Captain cook
9/30/2014 12:56:52 PM| 2 Answers
What two minerals can be identified by taste?
9/30/2014 11:38:46 AM| 2 Answers
the shininess of a material
9/30/2014 11:36:41 AM| 2 Answers
Weegy Stuff
S
R
L
1
1
P
C
1
P
1
1
L
P
C
P
C
1
P
C
L
P
C
1
P
C
P
C
P
C
L
Points 3316 [Total 27714]| Ratings 8| Comments 3236| Invitations 0|Offline
S
L
1
L
P
C
1
Points 2951 [Total 9482]| Ratings 12| Comments 2831| Invitations 0|Offline
S
L
P
C
L
P
C
P
C
L
P
C
P
C
P
C
Points 2829 [Total 20001]| Ratings 12| Comments 2709| Invitations 0|Offline
S
L
C
P
C
1
L
L
P
C
1
Points 2761 [Total 18700]| Ratings 19| Comments 2571| Invitations 0|Offline
S
L
1
1
1
1
L
1
L
Points 2595 [Total 12375]| Ratings 0| Comments 2595| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 983 [Total 12229]| Ratings 0| Comments 983| Invitations 0|Offline
S
L
P
C
P
C
1
L
P
C
L
P
C
P
C
P
C
P
C
Points 864 [Total 19395]| Ratings 2| Comments 844| Invitations 0|Offline
S
L
Points 733 [Total 1402]| Ratings 0| Comments 733| Invitations 0|Offline
S
1
L
L
Points 671 [Total 5794]| Ratings 5| Comments 621| Invitations 0|Online
S
P
C
L
P
L
1
Points 177 [Total 6234]| Ratings 2| Comments 157| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.