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
tester [92]
3 years ago
5

The oxygen produced by the first photosynthesis autotrophs

Biology
2 answers:
sesenic [268]3 years ago
7 0
Gd helmsman p xl a Smallwood Rosemarie
andrew-mc [135]3 years ago
4 0
I think it's cyanobacteria during the 3rd era. The cyanobacteria split water to get hydrogen then oxygen is released to the atmosphere.
You might be interested in
The Calvin cycle requires the energy from ______ and ______ which are produced in the light reactions.
Karolina [17]
The Calvin cycle requires the energy from ATP and NADPH which are produced in the light reactions
5 0
2 years ago
When cloning eukaryotic genes into bacteria for protein production, a copy of DNA that lacks introns must first be obtained. Int
Paladinen [302]
Obtaining mRNA from the cell, then using reverse transcriptase enzyme to convert it into a stable cDNA (or copy of DNA) molecule for insertion into the bacterial cell.










I hope this helps!
6 0
3 years ago
This diagram shows secondary succession occurring in a forest ecosystem that has experienced a fire. As these trees were burned
MrRa [10]

It would most likely be CO2

7 0
3 years ago
Charles has decided to eat nothing but cereal with milk for a whole day. Based on the above chart, which nutrient will Charles g
luda_lava [24]

Vitamin A because of the nutrient value per serving is 40% (the highest).

7 0
3 years ago
How high doses of radiation could affect a person's ability to make blood
34kurt
Radiation can actually affect the entire body, however it has a large effect of the bone marrow. Radiation is dangerous because too much can cause cellular depredation, this happens in environment that rapidly change like the bone marrow, which then interferes with blood cell production.
8 0
3 years ago
Other questions:
  • Resumen sobre el agua
    10·2 answers
  • Describe four human activities that have negative effects on earth's ecosystems. how do human activities increase the occurrence
    13·1 answer
  • Local winds are created by _____.
    10·1 answer
  • What an organism looks like, or other detectable characteristics, is its ______ .
    11·2 answers
  • Plz help ASAP!<br><br><br> Which phrase best describes the dependent variable in an experiment?
    14·1 answer
  • What is combustion?what are the essential conditions required for combustion?<br>​
    8·2 answers
  • What technique is used to separate the different cell parts? Select one: a. all of the above b. microscopy c. cell fractionation
    10·1 answer
  • What is the difference between the alleles of a gene?
    12·1 answer
  • When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of
    14·1 answer
  • A group of scientists discovered a new organism with the following characteristics:  Eukaryotic  Nonvascular Reproduces by sp
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!