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
I can live on the land or water, and I have a lot of cells. I have to consume other organisms , what kingdom am I?
Simora [160]
I believe it would be the reptile kingdom!
6 0
3 years ago
"Yeah, I know who you're talking about. I can picture the face - big guy, about 250 pounds. His name starts with a P. This is dr
sukhopar [10]

Answer:

tip-of-the-tongue effect

Explanation:

4 0
2 years ago
17. Look at "4". This helps you balance, play sports, and pay attention in
77julia77 [94]

Answer:

its answer is 1. cerebellum

Explanation:

The cerebellum is a part of the brain that plays a vital role in virtually all physical movement. This part of the brain helps a person drive, throw a ball, or walk across the room. The cerebellum also assists people with eye movement and vision. Problems with the cerebellum are rare and mostly involve movement .

4 0
3 years ago
Read 2 more answers
HELP!!!!!!!!!
tino4ka555 [31]

Correct answer: C). Cells are the basic building blocks of life but do not constitute life itself

Cell theory in a biology is a scientific theory, which is universally accepted and it states that all living organism are made up of one or more cells, cell is the building block of living thing, it also states that all cell arise from ore existing cells.

The cell theory is collection of ideas and conclusion, which were given after many years of continuous research and experiment of many scientist, which tells about the cell and how it operates.



5 0
3 years ago
Read 2 more answers
What is the largest source of waste generation?
SpyIntel [72]

Answer:        B. Individuals and agriculture

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Each of the following is a main idea of the cell theory except
    9·1 answer
  • Is the gene for being a super taster autosomal or sex-linked? Explain your answer based on the pedigree chart.
    8·1 answer
  • 2 Points
    13·1 answer
  • The competitive effect of one species on another (interspecific competition) is related to…
    8·1 answer
  • explain what it means to view something from a frae of reference. provide an example that illustrate your explanation.
    12·1 answer
  • plant reproduction requires the presence of auxins, as well as a large amount of sugar for energy. which two main plant tissues
    11·1 answer
  • Please help !! Which organism is the producer?
    13·2 answers
  • Which type of cell is pictured on the right?<br> V eukaryoticy<br> COMPLETE
    6·1 answer
  • What is similar about fermentation and phtotsynthesis.
    8·1 answer
  • What is the composition of a tetrad at the beginning of prophase i?.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!