« previous next »

Author Question: Which organisms were the first to produce O2? What will be an ideal ... (Read 61 times)

javeds

  • Hero Member
  • *****
  • Posts: 570
on: Jul 14, 2018
Which organisms were the first to produce O2?
 
  What will be an ideal response?

Question 2

To which of the following languages is Manchu the most closely related?
 
  A) Mandarin Chinese
  B) Cantonese
  C) the tribal languages of central and southeastern Siberia
  D) the tribal languages of central Tibet
  E) Korean


shayla

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 14, 2018
Answer to Question 1

Oxygenic cyanobacteria were the first organisms to produce O2.

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Furchgott's discovery that endothelial cells produce a vasodilating substance. Furchgott's discovery that endothelial cells produce a vasodilating substance.
Biology deals with the study of the many varieties of living organisms. Biology deals with the study of the many varieties of living organisms.
A model of anxiety in which stressful events or a changing mental condition can produce unfavorable A model of anxiety in which stressful events or a changing mental condition can produce unfavorable
Find the factor demand for labour and the amount of output it will produce. Show all ... Find the factor demand for labour and the amount of output it will produce. Show all ...
A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ... A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ...
1.6 Organisms are made up of cells, each of which contains an identical set of genes. 1.6 Organisms are made up of cells, each of which contains an identical set of genes.
Video: Decubitus Ulcer

For a complete list of videos, visit our video library