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
Hoochie [10]
2 years ago
11

Why do scientists assume the first photosynthetic organisms were anoxygenic?

Biology
2 answers:
Scrat [10]2 years ago
7 0

Answer:

scientists are always finding new things

Doss [256]2 years ago
5 0
Because photosynthesis produces oxygen, scientists assume the first photosynthetic organisms were not consuming oxygen, but producing it.
You might be interested in
While using a dichotomouy key to identify a specificities of fish you must start with
Nadusha1986 [10]

the feature the is not shared by all fisj

8 0
3 years ago
HELP ME PLEASE VERY URGENT !!!!!!! PLEASE TAKE A QUICK LOOK AT THE PICTURE YOULL GET POINTS !!
AlexFokin [52]

  • <em>it's </em><em>letter</em><em> </em><em>C </em>

Explanation:

<em>because</em><em> </em><em>the </em><em>R </em><em>called </em><em>in </em><em>sperm </em><em>nuclei</em>

<em>hope</em><em> it</em><em> helps</em>

5 0
2 years ago
Read 2 more answers
This diagram shows a red blood cell in a beaker that contains a solution with a
ddd [48]

Answer:

3. D. The red blood cell will shrink from losing water molecules

59. C. Glucose + Oxygen —> Carbon dioxide + Water

Explanation:

The red blood cell has a lower salt concentration than the liquid which means that it has a higher water concentration than the liquid.

By the process of osmosis, water will flow from the red blood cell to the liquid which would lead to the red blood cell shrinking in size.

Cellular respiration is used to create energy for cells. It works by burning glucose in the presence of oxygen. The result is an outburst of energy and CO2 as well as water.

3 0
2 years ago
Is the following statement true or false? luminol detects human blood at crime scenes. it changes color if an iron-containing pr
marusya05 [52]

Answer: A) Trues

Explanation:

6 0
3 years ago
How do yo abbreaviate adenosine triphosphate
KiRa [710]
The abbreviation for adenosine triphosphate is ATP
8 0
2 years ago
Other questions:
  • The incidence of change blindness _____ when a cue is added to the scene that indicates which part of the scene has changed.​
    6·1 answer
  • A client has black, sticky, tarry, foul-smelling stools from digested dark blood. which term should the nurse use in report to d
    13·1 answer
  • During chilly days, you might notice lizards lying (“basking”) in sunny areas. Why do lizards bask in the sun?
    6·1 answer
  • Please i really need help and i cant think anymore
    11·1 answer
  • What was the great dark spot on neptune?
    15·1 answer
  • Filtrate becomes less concentrated as it flows down the medullary collecting ducts, toward the renal pelvis.
    9·1 answer
  • What implications need to be considered when creating environmental policies?
    10·2 answers
  • I'll give you brainlest! If your answer is correct!
    9·2 answers
  • Help, will mark brainliest!!
    7·2 answers
  • 3. Number the steps to carry out an investigation:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!