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
BartSMP [9]
3 years ago
12

The oldest known fossil belongs to the cyanobacteria. How did this fossil help to alter the atmosphere of ancient Earth's oxygen

levels?
Biology
1 answer:
JulijaS [17]3 years ago
4 0
Cyanobacteria are autotrophic and perform photosynthesis. Photosynthetic organism produce oxygen in the exchange for Carbon Dioxide. Cyanobacteria caused oxygen levels to rise in Earths atmosphere.
You might be interested in
Question 5 unsaved adding a unit to move a susceptible group enough to prevent metabolism is known as
mrs_skeptik [129]
<span>adding a unit to move a susceptible group enough to prevent metabolism is known as shifting.
These phenomena happen especially for liposoluble organism circulating in blood like drugs an hormones.
these molecules circulating blood can be divided into two forms : 
The free-form: which is the active part, it circulates freely in the blood, but are easily metabolised.
The bound form: it can be bound to other molecules from the organisms depending on its affinity like proteins (albumin, glycoproteins). this form is not active but is prevented from metabolism.

Competition for bounding proteins can happen between two drugs for example. If they have a different degree of affinity for proteins, then the most affine will displace the less affine from the protein and bound it, and that is call shifting</span>
3 0
3 years ago
Brown eyes are dominant over blue eyes. If two brown eyed parents have a child with blue eyes, what does it mean about
Kitty [74]

Answer:

The answer is D.

7 0
3 years ago
Read 2 more answers
Question 4 of 10
gregori [183]

It has the strongest winds in the solar system

  • Neptune

Its orbit was used to predict the existence of another planet

  • Uranus

It is most well-known for its rings

  • Saturn

It has a giant storm three times the width of Earth.

  • Saturn

6 0
3 years ago
Suppose a species lived in an environment that changed very little over millions of years. Which theory about how fast evolution
hjlf

Gradualism is referred to the theory about how fast evolution occurs in this type of species.

<h3>What is Gradualism?</h3>

This type of evolutionary changes occurs gradually and not in large steps or volume.

This however explains why the species had very little changes for a very long time as a result of the environment being best suited for them.

Read more about Gradualism here brainly.com/question/20463574

#SPJ1

4 0
2 years ago
Does temperature appear to have been relevant to the amount of oxygen consumed?
OverLord2011 [107]

Answer:

At a thermoneutral ambient temperature, cooling either thermode increased oxygen consumption. In a cold environment, cooling either thermode increased the rate of oxygen consumption more than at a thermoneutral temperature. Heating either thermode tended to decrease oxygen consumption in a cold environment. 3.

Explanation:

6 0
3 years ago
Other questions:
  • An action potential is necessary for a nerve impulse to occur. True or false?
    12·1 answer
  • Precipitation is an example of what type of reaction
    9·1 answer
  • Are skin and/or bone an organ?
    6·1 answer
  • A single strand of DNA helix consists of 100 nitrogenous base pairs. On one strand, 36 of the bases are adenine and 24 are cytos
    9·1 answer
  • Drag each tile to the correct location.
    7·1 answer
  • When did Kunle Olukotun born?
    9·1 answer
  • I will be great that yo answer this thank you
    7·1 answer
  • PSYCHOLOGY <br> Briefly describe the relationship between hormones, emotion, and external behavior
    6·1 answer
  • What is the output of (A + B)(A + C)?
    9·1 answer
  • In terms of anatomic directional terms, the heart is considered ______ to the sternum.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!