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
poizon [28]
3 years ago
11

How did early life help create the ozone layer?

Biology
1 answer:
Semmy [17]3 years ago
3 0

Answer:The Ozone Hole. One billion years ago, early aquatic organisms called blue-green algae began using energy from the Sun to split molecules of H2O and CO2 and recombine them into organic compounds and molecular oxygen (O2). ... As oxygen in the atmosphere increased, CO2 decreased.

You might be interested in
A scientist wants to determine the effect of a new type of gasoline, he fills one with normal and the other with the new, which
Harman [31]
A. The car with the normal
3 0
3 years ago
Read 2 more answers
The graph above was made by a South American biologist in the country of Brazil, after a long study on parrots. About 200 years
hoa [83]
This question is unfortunately incomplete as the graph is not visible. The options given are:
<span><span><span><span>A) Red parrots have become less common in the last 200 years.</span> </span> </span></span>

B) There are probably less green parrots today than there once were.

<span><span><span> </span> </span></span>

C) Blue parrots probably are the best adapted species to live on farms.

<span><span><span> </span> </span></span>

D) The blue parrot population has likely increased in the last 200 years.


The answer is B. This is because the graph shows the highest number of green parrots in the 'deep forest' category of environment, whereas the numbers in the 'grassland' and 'scrub forest' are less. Since the forested area in Brazil has decreased rapidly, this means that the preferred environment of the green parrot has decreased, probably resulting in a decline in the green parrot population

<span><span><span> </span> </span></span>
7 0
4 years ago
Read 2 more answers
DO NOT SEND ME PDFS!!!!!! Answer with a paragraph
Andrews [41]

short whiskers and short whuskers

7 0
4 years ago
What percentage of the organisms reproduce asexually?
goblinko [34]
Each population is characterized by a certain percentage of asexual and sexual reproduction. The percentage of asexual reproduction ranges between 0% (complete sexual reproduction) and 100% (all the females reproduce by gynogenesis).
7 0
3 years ago
I don’t understand this I need help
Paha777 [63]

Answer:

3,2,1,4

Explanation:

as time goes on the water levels rise it expands the bay of the river

4 0
2 years ago
Other questions:
  • Your body has designed a traffic signal for action potentials traveling from one neuron to another. in this system, a red light
    9·1 answer
  • True or false? The more similar two organisms are, the more distant their common ancestor is.
    15·1 answer
  • Why do bacteria thrive even in hostile environments
    6·1 answer
  • I need help with this questions pls. Thank you
    8·2 answers
  • How can looking for signal words help you take better notes
    6·1 answer
  • Which organism is the most ancient
    9·2 answers
  • What differs among DNA structures of different species?
    5·2 answers
  • How are Earth and Saturn similar?
    8·2 answers
  • Put the events of cultural eutrophication in the correct order.
    12·1 answer
  • If the atp synthase for an organism contains 15 c subunits, how many protons must flow through atp synthase per each new atp tha
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!