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
faltersainse [42]
3 years ago
12

If cyanobacteria never evolved during earth's history, how would their absence affect the composition of earth's atmosphere?

Biology
1 answer:
Blababa [14]3 years ago
3 0
Cyanobacteria, also known as blue-green algae, are found in vast quantities in fresh and salt water. Cyanobacteria are able to conduct photosynthesis. By utilising energy from the sun, they produce carbohydrates from water and carbon dioxide. As a byproduct, they produce oxygen. So cyanobacteria provided oxygen to the atmosphere that allowed other lifeforms to develop.
You might be interested in
What does it mean when a biologist uses the term crossing-over? why is crossing over a good thing?
igor_vitrenko [27]
It refers to dna and chromosomes
8 0
2 years ago
The nucleus is primarily stores most of the cell's *
Ganezh [65]

<u>Answer</u>:

The nucleus is primarily stores most of the cell's DNA.

<u>Explanation</u>:

It is made up of two chains which coils around each other, together they form a helical structure tat further carries the genetic information, which will help in the development, functioning and also the growth and reproduction in all known organism and in viruses. The nucleus is stored in it and the nucleus has the genetic material. They are composed of the nucleotides, in which each nucleotide has four nitrogen. These nucleotides are together joined with covalent bond to each other. Together they have the biological information.    

4 0
2 years ago
Which explanation is most likely the reason for the evolution of a larger brain in humans?
Alinara [238K]

Answer:

The correct statement is A larger brain allows humans to solve complex problems.

Explanation:

From the ancient time, the human brain has size increased three times. The most probable reason for the evolution of brains is that larger brain allows humans to handle complex problems more easily.

complex and large brains help humans to understand and store a different type of knowledge and information and aids in interacting with each other.  

The current time human has a larger and complex brain in any living primates.

Thus, the correct statement is A larger brain allows humans to solve complex problems.

6 0
3 years ago
Please help #4. <br> If you help me i will love you
Lerok [7]

the answer is pancreas

5 0
3 years ago
Read 2 more answers
What works best in combating a virus?
ruslelena [56]

Answer:

wear a mask and buy clorox wipes or bleach spray

Explanation:

6 0
3 years ago
Other questions:
  • Name the quadrant(s) (RUQ, LUQ, RLQ, and LLQ) and region(s) (right hypochondriac, epigastric, left hypochondriac, right lumbar,
    7·1 answer
  • 1. In an ecosystem, there are many factors that affect how many organisms can survive there. Which of the following is one of th
    9·1 answer
  • You decide to make strawberry banana popsicles. What change in state will need to occur
    15·2 answers
  • When electrons flow along the electron transport chains of mitochondria
    12·1 answer
  • Write a summary statement for saturated fats including whether they are solids or liquids at room temperature and whether they h
    6·2 answers
  • Intermediate photographs should show the relation of evidence to other parts of the crime scene. A. True B. False​
    7·1 answer
  • The process of breaking down of oxygen into alcohol and carbon dioxide without using
    5·1 answer
  • Which of the following does NOT describe a basic regulator of digestive control?-Short reflexes act locally in the GI tract.-pH,
    8·1 answer
  • what are the similarities and differences between facilitated diffusion and active transport by a protein pump
    9·1 answer
  • not really a question but i urgently need ideas for experiments that show the theory of evolution by natural selection!! ty &lt;
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!