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
Romashka-Z-Leto [24]
3 years ago
6

The first organisms that perform photosynthesis involves about two.2 billion years ago. During the next few million years their

actions cause which of these events?

Biology
1 answer:
balandron [24]3 years ago
6 0

Answer:

<em>The correct option is A) an increase in oxygen levels, which led to the extinction of many anaerobic organisms.</em>

Explanation:

Photosynthesis can be described as a process in which food (glucose) is produced by photosynthetic organisms by using carbon dioxide, water along with light energy from the sun. Oxygen is released as a by-product of this reaction. The process of photosynthesis initially allowed for oxygen gas to get accumulated in the air. This caused the rise of aerobic organisms who required oxygen for respiration. Before the photosynthesis organisms evolved, there was not enough oxygen gas on earth to support the life of aerobic organisms.

You might be interested in
If the blue eyed kid has brown eyed parents what is their genotype
Sloan [31]
BB or Bb because brown eyes are dominant and blue eyes are recessive.
8 0
3 years ago
What makes the seaweed different from all the other plants?
Sliva [168]

Answer:

They are unicellular

Explanation:

All plants beside seaweed (algae) are multicellular; they are made up of more than one cell.

Seaweeds are unicellular; they are made up of only one cell.

6 0
3 years ago
Read 2 more answers
Each gene in the human genome codes for a single protein. True or False?
d1i1m1o1n [39]
The statement " Each gene in the human genome codes for a single protein. "is just wrong, as according to the basic knowledge of human genome, o<span>nly about 2 percent of the genome codes for proteins. This answer does make difference and clearly explaines why the previous one is wrong. Hope you will find it helpful!</span>
7 0
3 years ago
What are 3 steps involved in cellular communication
zheka24 [161]
Reception, transduction and responde
4 0
2 years ago
C6H1206+O2 + some energy—&gt; 6CO2 + 6H2O + ATP + heat is the chemical equation for what
Effectus [21]

Answer:

prob cellular respiration

Explanation

the first part is sugar and oxygen which would result in the second part, carbon dioxide, water, heat, and usable energy. aka reactants to the products

5 0
3 years ago
Other questions:
  • What is the policy used most by the Fed to change the money supply?
    15·1 answer
  • Three minutes into a cardiac arrest resuscitation attempt, one member of your team inserts an endotracheal tube while another pe
    8·2 answers
  • If you expose HeLa cells to 3H-thymidine just as they enter S phase, then wash this material off the cells and let them go throu
    13·2 answers
  • DNA exists in chromatin form in the nucleus: letter A in the illustration. During mitosis and meiosis, chromatin undergoes a cha
    7·2 answers
  • You hear a commercial on the radio for a brand-new medicine guaranteed to boost immunity. Which source is the least likely to pr
    15·2 answers
  • Which of the following methods of agriculture is the most reliant upon technology and automation?
    15·2 answers
  • Osmosis does not require an additional input of energy from the cell.
    12·2 answers
  • HELP!!! Explain why there are always more primary consumers in an ecosystem than tertiary consumers.
    5·1 answer
  • Is the following statement true or false:
    10·2 answers
  • At noon on a sunny day, Marcia walks barefoot down the street to her friend's house. The pavement is so hot she can barely stand
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!