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goldfiish [28.3K]
3 years ago
10

How might spontaneous generation be possible in a reducing environment? Question options: The reducing environment was created b

y the abundance of methane, which contains carbon. Because all life is organic, and organic molecules are all carbon-based, these molecules were the source of the spontaneous generation of life. Without oxygen, biological molecules, such as amino acids do not easily break down. As a result, they could have formed a "soup" of organic molecules in the oceans of the past, allowing spontaneous generation to occur. The concentration of nitrogen in the atmosphere created this reducing environment. Because nitrogen is present in amino acids, nucleic acids, and lipids, this environment favored conditions that eventually formed life through spontaneous generation. With high concentrations of carbon dioxide, biological molecules could have performed photosynthesis and pumped oxygen into the air in sufficient amounts over about 2 billion years, making spontaneous generation possible.
Physics
1 answer:
melomori [17]3 years ago
7 0
Please help me with the unit assessment i have no idea any of the answers
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Tell whether the following statements are true or false:
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Answer:

1)true

2)false

3)true

4)true

5)false,cz amatter is made of atoms while light is an electromagnetic radiation.

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3 years ago
A water pipe tapers down from an initial radius of R1 = 0.21 m to a final radius of R2 = 0.11 m. The water flows at a velocity v
Aleks [24]

Answer:

0.116 m^3/s

Explanation:

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Q=Av

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In this problem, at the initial point we have

v = 0.84 m/s is the speed of the water

r = 0.21 m is the radius of the pipe, so the cross-sectional area is

A=\pi r^2 = \pi (0.21 m)^2 =0.138 m^2

So, the volume flow rate is

Q=(0.138 m^2)(0.84 m/s)=0.116 m^3/s

8 0
3 years ago
Describe what a reactant is
ohaa [14]

Answer:

the element that takes part in a chemical reactions

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except decomposition reactions

4 0
3 years ago
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In what way has technology used aboard the International Space Station benefitted humans back on Earth?
FrozenT [24]

Answer:

Robotic arms used aboard the ISS are now used in delicate surgeries on Earth.

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The ISS allows users to address hardware product development gaps, advanced manufacturing, and emerging technology proliferation. Microgravity-enabled material production capabilities and advanced manufacturing facilities are demonstrating scientific and commercial merit for Earth benefit

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3 years ago
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Soloha48 [4]

Answer:

Millions of years.

Explanation:

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4 0
3 years ago
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