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
Papessa [141]
3 years ago
15

For photosynthetic organisms to evolve and become more abundant than chemosynthetic organisms, what variable must have changed i

n the environment of ancient earth? carbon dioxide must have become more abundant. nitrogen must have become more abundant in the atmosphere. oxygen must have become more abundant. endosymbiosis needed to occur between a smaller prokaryote and a larger prokaryote.
Biology
1 answer:
ValentinkaMS [17]3 years ago
8 0
The evolution of organisms are based on the resources available in order for it to be capable of growth still. In the given choices above, the substance or chemical that changed over time is the supply of carbon dioxide which is an essential substance for photosynthesis. Thus, the answer the first choice. 
You might be interested in
The drug of choice for fungal infections of the nervous system is ________.
Amiraneli [1.4K]

Answer:

Amphotericin B

Explanation:

<u>Amphotericin B is the injection which is used to treat potentially life-threatening and serious fungal infections. It is used to treat the fungal infection of nervous system.</u>

It is placed in the class of medications which is known as antifungals. It works by slowing growth of the fungi which cause infection.

Amphotericin B injection is a solid powder which is into solution and injected intravenously into a vein.

7 0
3 years ago
Compare and contrast the five layers that make up the atmosphere.
Wittaler [7]
Exosphere is in the top 600-800km exosphere has a very low amount of gases almost like in outer space.

Termosphere, 80-600km absorbs gamma rays uv rays and rays that damage our healt also know as ionosphere, is the hottest one.

Mesosphere, 50-80km, the temperature here reaches -140 Celsius shooting stars are formed here

Stratosphere, 12-50km produces the mayor part of the atmospheric ozone, some army planes reach this later

Troposphere, thats the source of the mayor part of the gases here in the atmosphere.

Please please if I was useful please mark this as brainlyest
5 0
3 years ago
Read 2 more answers
I can live on the land or water, and I have a lot of cells. I have to consume other organisms , what kingdom am I?
Simora [160]
I believe it would be the reptile kingdom!
6 0
3 years ago
Bacterial dna is used frequently in genetic engineering because
Damm [24]

It is found in the cytoplasm as a simple circle.

3 0
3 years ago
An example of a typical pioneer species, that is one that appears in the earliest stages of ecological succession, is
djverab [1.8K]
Humans I think because they are big pioneers
8 0
3 years ago
Read 2 more answers
Other questions:
  • After burning of plant material, where is the carbon returned to?
    9·2 answers
  • Describe two things that would happen in an ecosystem if there were no unicellular organisms. Explain why something with only on
    15·2 answers
  • C) Why does the ethanol change colour?
    6·2 answers
  • In which case is an inherited mutation most likely to be expressed?
    11·2 answers
  • As the sarcomere contracts which band becomes smaller? Which band remains the same?
    5·1 answer
  • Identify one general effect of overuse of an environmental resource.
    5·1 answer
  • During the fall, squirrels store food to prepare for winter. Which of the following changes in the environment during the winter
    11·2 answers
  • Sheet metal, treated lumber, and corn syrup are all examples of
    7·1 answer
  • Fill in the blanks with the correct word or phrase.
    12·2 answers
  • Which level comes just after atoms in the organization chart of living things?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!