This topic contains a solution. Click here to go to the answer

Author Question: The first bacteria probably used ________ instead of water as a source of hydrogen. (Read 87 times)

Mr. Wonderful

  • Hero Member
  • *****
  • Posts: 866

Question 1

The waste gas released by plants as they synthesize food sugars from carbon dioxide and water is ________.
◦ methane
◦ oxygen
◦ nitrogen
◦ carbon dioxide

Question 2

The first bacteria probably used ________ instead of water as a source of hydrogen.
◦ H2S
◦ H2SO4
◦ HCl
◦ OH-1
◦ Fe3O4.OH


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by Mr. Wonderful on Feb 28, 2020

helenmarkerine

  • Sr. Member
  • ****
  • Posts: 324
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 29% of students answer this correctly




Mr. Wonderful

  • Member
  • Posts: 866
Reply 2 on: Feb 28, 2020
Great answer, keep it coming :)


kishoreddi

  • Member
  • Posts: 329
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

For a complete list of videos, visit our video library