1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
konstantin123 [22]
3 years ago
5

When did oxygen levels start to decline from 35 percent down to today's levels?

Advanced Placement (AP)
2 answers:
lara31 [8.8K]3 years ago
7 0
A. after the carboniferous period
Readme [11.4K]3 years ago
4 0

Oxygen levels start to decline from 35 percent down to today's level after the carboniferous period.

Answer: Option a

<u>Explanation: </u>

The Pangea formation marked the carboniferous period. Pangea has revolutionized land and sea, laying the foundations for new species of plants and animals. A new group of species, diapsids, enters the stage.  

During the carboniferous period, 35 percent of oxygen levels began to fall to current levels. Oxygen levels dropped from 35 percent to their current level about 95 million years ago. Oxygen is a product produced as waste from photosynthesis and used by respiration.

You might be interested in
This year is expected to be a great one for selling walk shoes in Georgia. At very low prices, only the most efficient shoemaker
Lady bird [3.3K]
The supply curve will be composed of the following points
(10, 1000) from the statement: 1000 shoes in the market at $10
(25, 1200) from the statement: 12000 shoes at $25 per pair
(40, 1400) from the statement: <span>$40 per pair, the existing firms increase production to 1400 each</span>
3 0
3 years ago
Phoebe takes her two children to story time at the local public library. which factor is affecting her parenting?
Dima020 [189]

The factor that affects her parenting is community resources.

<h3>What is Parenting?</h3>

Parenting may be defined as an activity made by parents in order to raise the standards of their child throughout.

The complete question is as follows:

  • Socioeconomic status
  • Work-life
  • Early relationships
  • Community resources.

The activity of bringing her two children to story time at the local public library illustrates the affect of community resources on parents. It enhances the communication and listening power of children which is a significant advantage of parenting.

Therefore, the correct option for this question is D.

To learn more about Parenting, refer to the link:

brainly.com/question/240537

#SPJ1

5 0
2 years ago
Gawain sa Pagkatuto Bilang 3 : Pagmasdan ang larawan sa ibaba. Anong
marin [14]

Answer:

hjkhjkhjkhjkj

Explanation:

4 0
3 years ago
hey guys i just wanted to apologize. i answered a question asking 'what is 6+(-11)', and i did it and explained how i got my ans
Tanzania [10]

Answer:

You can just keep the points, If she don't like the answers or steps, it's fine, You can keep the points to yourself because you earned them, it's not a big deal

Explanation:

8 0
3 years ago
Read 2 more answers
List three intersecting facts about Leopold rule in the Belgin congo?
AveGali [126]

Answer:

  1. Leopold II himself never step foot in the Congo during the entire time he ruled over it.
  2. If the rubber quota was not met, then the consequence was death. The Force Publique, who was Leopold's personal police force set in the Congo, was required to collect a right hand per successful kill. hands could've been collected by FP officers, or by the villagers themselves. Since bullets couldn't be wasted, hands were sometimes chopped off while the victim was still alive. Often times, when villages were expected to pay the different with hands, they'd attack other villages to gather hands.
  3. At least 500 Chinese labourers were imported to work on railways in the Congo, but a majority of them either left or died.
6 0
3 years ago
Other questions:
  • What is one skill students should practice to prepare for the arithmetic section of ACCUPLACER?
    5·2 answers
  • Which of these head gaskets is most commonly used on engines equipped with an aluminum cylinder head on a cast iron block? A. Pe
    12·2 answers
  • Compare and contrast the retina’s two photoreceptor cells, and explain the role rhodopsin plays in vision
    6·2 answers
  • **80 Points** Please Answer!
    5·2 answers
  • Which of the following statements is most correct?
    15·1 answer
  • Income from a summer job that is well-managed can realistically cover the cost of what
    14·1 answer
  • In New York “1790” Is the population made up of mostly white males? females?
    10·1 answer
  • How did Islamic values similar to those expressed in the sources contribute to advancements in the field of science?
    14·2 answers
  • What part of the brain does learning a new language strengthens? action. thought. memory. all of the above​
    9·1 answer
  • Why have gasoline powered cars not been entirely replaced by electric cars?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!