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Marta_Voda [28]
3 years ago
6

what was most likely responsible for the fact that organic molecules no longer form spontaneously on Earth?

Biology
2 answers:
tigry1 [53]3 years ago
8 0
Salutations! 1) A. The primitive earth had a lot of UV radiation. Photosyntesis originated O2 and O2 reacts generating O3 (ozone). The ozone layer prevents a lot of UV radiation to reach inorganic molecules and provide them with a lot of energy. Without that intense UV radiation, inorganic molecules cannot convert into organic molecules (because no other source of energy provides enough energy for that process). Hope this helps you!

Drupady [299]3 years ago
3 0

Answer: Less ultraviolet light and more oxygen.

Explanation:

The early earth condition were different from now. There was more ultraviolet light as there was no ozone layer during the early earth conditions.

The oxygen levels at the time of early earth was also not high but after the evolution of cyanobacteria the level of oxygen rised very rapidly.

These conditions does not allow the formation of organic molecules from inorganic molecules.

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a human fetus develops at the mother’s body temperature. at birth, most newborns experience a drop in temperature, and their bod
Sloan [31]

A human fetus develops at the mother’s body temperature. At birth, most newborns experience a drop in temperature, and their bodies must quickly do something about it. What they do is the same thing a hibernating mammal does as it rouses itself from its winter "snooze." During hibernation, an animal’s body temperature is low. In order to move about and take care of itself once awake again, the animal that has been hibernating must raise its body temperature. (William k. Purves et al., life: the science of biology) The definition is the primary pattern of organization in this passage.

This passage is explaining the process of hibernation and its importance in the animal life cycle.

To learn more about hibernation here

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3 0
2 years ago
Please help me it would mean a lot
kobusy [5.1K]

I would say the second option. Because colorblindness is regressive that means that there must not be a dominant genotype that replaces colorblindness. In most people there is a dominant genotype that replaces colorblindness which is simply being able to see color. So in me for example I might have a  colorblindness genotype somewhere but since it is regressive (b) then it gets taken over but the color vision (B) remember that a dominant will always take over the regressive. the only way that someone can be color blind is if there are 2 regressive (b) genotypes that means there is no dominant genotype to take them over. Brown eyes is an Example of a dominant genotype that means that it will take over blue eyes (which is why there are most brown eyed people in the world)


I chose the second option because there is both X and Y and each one has either a B or a b the last option only had B.


But Remember that B > b

                                B trumps b

7 0
4 years ago
What three factors are needed for natural selection to occur? Check all of the boxes that apply.
NISA [10]
Variationoverpopulationadaptation

6 0
4 years ago
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Question 1 (2 points) BIOLOGY HELP PLEASEEEEEE! Scientists are conducting an experiment on a new specimen. They are trying to de
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Explanation:

8 0
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