answer.
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
andreev551 [17]
2 years ago
9

What effect did the increase in atmospheric oxygen by photosynthetic organisms have on Earth in terms of the geosphere?

Biology
1 answer:
notsponge [240]2 years ago
3 0

Answer:

hope it helps you❤❤❤

Explanation: But roughly 2.45 billion years ago, the isotopic ratio of sulfur transformed, indicating that for the first time oxygen was becoming a significant component of Earth's atmosphere, according to a 2000 paper in Science. At roughly the same time (and for eons thereafter), oxidized iron began to appear in ancient soils and bands of iron were deposited on the seafloor, a product of reactions with oxygen in the seawater.

Most important, how did the amount of atmospheric oxygen reach its present level? "It's not that easy why it should balance at 21 percent rather than 10 or 40 percent," notes geoscientist James Kasting of Pennsylvania State University. "We don't understand the modern oxygen control system that well."

You might be interested in
In freshwater microorganisms, an organelle known as the contractile vacuole regulates the flow of water into and out of the cell
Ilya [14]

Answer:

b

Explanation:

6 0
2 years ago
Which sphere does the frog belong to? atmosphere biosphere geosphere hydrosphere
Mila [183]

Answer:

biosphere

Explanation:

5 0
2 years ago
Read 2 more answers
James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he
uysha [10]
He is making a plant cell since the cell walls are box shaped, the balloon would be the large vacuole which takes up a lot of space in the cell, the marbles would be the ribosomes.
3 0
2 years ago
Read 2 more answers
Which of the following statements is true?
ziro4ka [17]
Lipids contain more energy that carbohydrates because they contain more carbon to hydrogen bonds to release energy when broken.

<span>A macromolecule is a large molecule. There are four groups of macromolecules: carbohydrates, proteins, nucleic acids and lipids. Lipids consist of glycerol and fatty acids and are constructed from fats, oils, waxes, phospholipids and steroids. A lipid's function is to insulate the body and provide warmth in cold conditions. It can be concluded that a person with very little body fat gets very cold easily and a person with a lot of body fat gets very warm very quickly.
</span>
6 0
2 years ago
Mary and Jim used a streak plate to test pieces of the rock. They compared their results to a streak of limonite:
nataly862011 [7]

Answer:

The streaks made by the limonite are yellow, and the streaks made by Mary and Jim’s sample are brown. Therefore, they are not the same mineral. The rock is not made of limonite.

Explanation:

PLATO

4 0
2 years ago
Read 2 more answers
Other questions:
  • What is the role of an indicator? predict how the glucose test strips and iodine would react to the following foods:
    10·2 answers
  • Which animal would display a j-shaped curve for its rate of oxygen consumption relative to its speed? sockeye salmon ground squi
    14·2 answers
  • Which adds evidence to the idea that the cell is the basic unit of life?
    5·1 answer
  • Energy from sunlight is _____; if it is harnessed to move a turbine and generate electricity, then it has been converted to ____
    11·1 answer
  • Sarah wants to fish in a freshwater river. Which section of the river offers her the best location for fishing?
    9·2 answers
  • A primary function of polysaccharides attached to glycoproteins and glycolipids of animal cell membranes is to: a)facilitate dif
    13·1 answer
  • Suppose a one-year old child is playing with a toy near an electrical out-let. He sticks part of the toy into the outlet. He get
    9·2 answers
  • In the open ocean, tiny organisms called _____ perform photosynthesis. They are the primary producers in many _____ that overlap
    13·2 answers
  • What are two ways that a zoo could provide food to an animal<br> that eats plants?
    9·2 answers
  • Where does the process of solar energy formation begins?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!