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jolli1 [7]
3 years ago
8

Oxygen was into ally created in earths atmosphere by___.

Biology
2 answers:
Mariulka [41]3 years ago
7 0
Here something that might help 
<span>
Most scientists believe that for half of </span>Earth's<span> 4.6-billion-year history, the</span>atmosphere<span> contained almost no </span>oxygen<span>. Cyanobacteria or blue-green algae became the first microbes to produce </span>oxygen<span> by photosynthesis, perhaps as long ago as 3.5 billion years ago and certainly by 2.7 billion years ago.</span>
kompoz [17]3 years ago
4 0
Blue-green algae........
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Humans can perceive yellow light because, when the light hits the back of the eye, it stimulates both "blue" and "green" cones.
Karolina [17]
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The perception of color and odor is determined by the combination of the receptor that catches the stimuli. That is why there is a wide variety of stimulus that can be perceived by such sense. if the perception coded by a specific receptor, the organ will need much more receptor that will make it less sensitive.</span>
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3 years ago
How does blood cells size compare to E. coli bacteria
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E Coli bacterium are about 2.0 micrometers in length and .25 to 1 micrometer in diameter. In comparison, a red blood cell is about 6 to 8 micrometers in diameter and a thickness that ranges from .8 to 1 micrometer in the center to 2 to 2.5 micrometers at the thickest point.
6 0
2 years ago
In your OWN WORDS define the word photosynthesis make it simple.
Rama09 [41]

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The way that plants create food using sunlight

Explanation:

8 0
2 years ago
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A client in skeletal traction has a nursing diagnosis of Impaired Tissue Integrity: Related to puncture wound; pins.
VladimirAG [237]

Answer:

The client traction weights are resting on the floor.

Explanation:

The immediate action of the nurse should be to reapply the weights to give traction to the fracture. The health care provider must be notified that the weights were lying on the floor, and the client should be realigned in bed. The client's blood pressure is slightly elevated; this could be related to pain and muscle spasms resulting from lack of pressure to reduce the fracture. Oozing of clear fluid is normal, as is the capillary refill time.

DIF: Applying/Application REF: 1060 KEY: Fracture| traction

MSC: Integrated Process: Communication and Documentation

NOT: Client Needs Category: Safe and Effective Care Environment: Management of Care

5 0
3 years ago
Compared to other receptors, what makes steroid hormone receptors unique?
Dafna11 [192]

Answer: b)Steroid hormone receptors are located within the cytoplasm of a cell.

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Other options are incorrect because steroid hormone binds the certain receptors only not neurotransmitters .It does not have domain of 20 trans-membrane and is bound to ligand for activation.Thus , the correct option is option(b).

6 0
3 years ago
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