Answer:
oxygenation of the atmosphere
Explanation:
The "Great Oxidation Event" was one of the most important things happening on this planet. Without it, there could never be animals breathing oxygen, like insects, fish, and certainly humans. Moreover, this moment of our planet was one of the main responsible for the evolution of eukaryotes.
For decades, scientists have worked to understand how and why oxygen emerged. And they suspect that life itself was responsible for creating the air we breathe.
The latest findings suggest that life was undergoing a tremendous transformation before the "Great Oxidation." An evolutionary leap that helps explain what we know today.
Formed 4.5 billion years ago, the Earth, at the time of the Great Oxidation, was already inhabited. But only by unicellular organisms. It is not exactly clear when life began on the planet, but the oldest fossils of these microorganisms date back at least 3.5 billion years ago. This suggests that life had existed on earth almost 1 billion years before the "Great Oxidation." From the moment oxygen spread through the atmosphere, it was possible for these organisms to evolve into more complex life forms.
Answer:
Option B. A double-stranded molecule with coded instructions for anorganism's physical characteristics, is the correct statement.
Explanation:
DNA is a genetic material which contains information about the physical features and characteristics of an organism. It is composed of five carbon sugar, phosphate group and nitrogenous base. The DNA base are adenine, cytosine, guanine, and thymine.
Hey there......
Area of the retina without rods or cones, where the optic nerve exits the back of the eye. In the retina, the specialized neurons that connect the rods and cones with the ganglion cells. Carries information to the brain. Blind spot is where optic nerve leaves the eye<span>. = NOT WHAT YOU WANT RIGHT WELL SCROLL DOWN FOR BETTER :)
</span><span>optic chiasm</span><span>
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<span>The backbone of a nucleic acid is made up of alternating sugar and phosphate molecules bonded together.
Hope This Helps...</span>
Answer: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.