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
JulijaS [17]
3 years ago
8

The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when ________.

Biology
1 answer:
Leokris [45]3 years ago
3 0

Answer :There was enough oxygen in the atmosphere to support a major burst of life on Earth

Explanation:

The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when there was enough oxygen in the atmosphere to support a major burst of life on Earth

For the first half of the Earht's history, there was no oxygen in the atmosphere. It was inhabited only by single-celled organisms.Of  those simple life forms, the cyanobacteria may have. evolved a way to take energy from sunlight, and used it to make sugars out of water and carbon dioxide. They used the same chemical process we know as photosynthesis. This released vast quantities of oxygen into the atmosphere and  triggered the evolution of complex life.

You might be interested in
Which is the most efficient way to avoid DNA mutations from UV radiation?
Natasha_Volkova [10]

The most effective way to prevent DNA mutation from UV radiation is: (C.) Avoid UV radiation by wearing sunscreen.

Mutation is the change in the normal sequence of DNA. The agents that induce these mutations are called mutagens. The mutations can be harmful as they can hamper the normal functioning of the living body. Some mutations however do not cause any significant changes and they are therefore called silent mutations.

Sunscreen is a a cream or liquid applied to the skin that prevents the harmful radiations of the sun to enter the body. They protect from the sun's UV-A and UV-B radiations.

To know more about mutation, here

brainly.com/question/17130462

#SPJ4

7 0
1 year ago
Which molecule (carbohydrate, lipid, protein) supplies more ATP one broken down?
erastova [34]
The number of ATP molecule depends on type of molecule broken down carbohydrate most commonly broken down to make  ATP
6 0
3 years ago
How does a light moths variation in color change its probability of surviving in a dark - tree environment over time?
Pani-rosa [81]

Answer:

Due to the moths light color it won't be able to blend in with the darkly colored trees therefore being easily seen by predators.

8 0
3 years ago
Mineral nutrients from the soil move into roots by
hram777 [196]
Active transport.

please give brainliest if correct, thank u
6 0
3 years ago
After the two avian kidneys do their work, a bird will excrete nitrogenous waste known as _____________ from the blood.
Ludmilka [50]

The avian kidneys are divided into units called lobules and as the two avian kidneys of birds do their work or function, most of these birds excrete nitrogenous waste known as uric acid from the blood, which reduces water loss but requires more metabolic energy to produce nitrogenous waste.

6 0
3 years ago
Other questions:
  • Fossil fuels are fuels such as coal, oil, and natural gas. They are formed over millions of years from the remains of ancient pl
    15·2 answers
  • I need a testable statement/problem.
    9·1 answer
  • The forelimb of the monkey, bat, penguin, and alligator look
    15·1 answer
  • Eukaryotic plasma membrane proteins are synthesized on a. free
    8·1 answer
  • Xam
    9·2 answers
  • a pea plant with round seeds is cross with a pea with wrinkled seeds. what can you conclude about the wrinkled seeds? (a, b, c,
    7·2 answers
  • Food provides the human body with all of the following except----- A. calories B. amino acid C. hydrochloric acid D. lipids
    8·1 answer
  • Which is a nonrenewable source of energy? A) wind B) hydropower C) natural gas D) solar energy
    14·2 answers
  • Which biome does this photograph represent?
    12·2 answers
  • What is a reproductive characteristic that gymnosperms and
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!