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
algol13
3 years ago
8

According to scientific evidence, earth’s earliest atmosphere lacked oxygen. Over time, oxygen was added to the atmosphere. Whic

h statements explain how this change occurred and how it affected life on earth? Choose all answers that are correct.
A. Adding oxygen to earth's atmosphere allowed for the development of eukaryotic organisms, which need oxygen to carry out many of their life processes.

B. Oxygen is needed to carry out photosynthesis. When cyanobacteria evolved, they began to carry out photosynthesis.

C. Adding oxygen to earth's atmosphere allowed for the development of prokaryotic organisms, which need oxygen to carry out many of their life processes.

D. Oxygen is a product of photosynthesis. When cyanobacteria evolved, they began to carry out photosynthesis.

PLEASE HELP!
Biology
1 answer:
lilavasa [31]3 years ago
7 0
The correct answer is A

hope this helps !
You might be interested in
A fully functioning enzyme molecule is arranged in a complex three-dimensional shape. this shape determines the
garik1379 [7]

A fully functioning enzyme molecule is fold into a complex three-dimensional shape and this structure determines the specific type of molecules it interacts with during a reaction. Each functioning enzyme molecule has a particular structure to bind <span>with a high degree of specificity to one or a few molecules and to carry out its function. Therefore, cellular function is directly associated to its structures.</span>

4 0
3 years ago
Read 2 more answers
Most of the atp production during cellular respiration occurs __________. most of the atp production during cellular respiration
makkiz [27]
Most of the ATP produced during cellular respiration occurs in <span>from activity of the ATP synthase machine</span>
5 0
3 years ago
The reaction occurs only at extremely high temperatures.<br> O Fusion<br> O Fission
Zanzabum

Answer:

fission

Explanation:

4 0
3 years ago
Read 2 more answers
WHAT AARE UNICELLULAR ORGANISM
Liono4ka [1.6K]

Answer:

Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism

7 0
3 years ago
Read 2 more answers
What happens after a probe DNA is inserted into a patient’s genome?
Korvikt [17]
When the probe dna is inserted into a patient’s genome the genome reacts to the person dna which causes the a reaction to the nerve cells
8 0
4 years ago
Other questions:
  • Gangrene is a life-threatening condition that results due to A. the death of cells and tissues. B. too much blood supply to affe
    9·2 answers
  • What periodic tabel would be silicon
    13·1 answer
  • How do you prevent wasps coming your way
    10·2 answers
  • 1. If an animal cell that has a 9% glucose solution inside is placed in a beaker with 9 % glucose solution, will there be a net
    8·1 answer
  • What would explain the change in the size of a gummy bear after it is placed in regular water?
    10·1 answer
  • The process of mitosis is the same in plant and animal cells until the division of the cytoplasm. At this stage, plant cells dev
    13·1 answer
  • How can a lack of water affect the cell functions
    10·1 answer
  • What kind of plate boundary results in a fault?
    5·2 answers
  • Fully explain how cellular respiration is a chemical process whereby the bonds of food molecules and oxygen molecules are broken
    13·1 answer
  • Monarch butterflies have very long tubular tongues. what is the most likely function of this adaptation? question 31 options: to
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!