Which statement correctly describes how the first life on earth could have occurred by spontaneous generation?
In an environment with a high concentration of methane, a carbon-based
molecule, carbon chains of increasing length could have formed. Because life is
carbon-based, life could have resulted from this process.
In an environment without free oxygen, amino acids, nucleic acids, and lipids
were able to increase in number. In large amounts, these molecules could have
formed simple life forms.
The energy from lightning striking the ocean caused free elements to fuse
together in a permanent bond. Eventually, the combination of these molecules
over time formed primitive life.
In an environment that contained ammonia, the nitrogen became part of amino
acid, nucleic acid, and lipid molecules. These are the components of life forms.

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

: )

the question isn't complete here so i can't right an answer '_'

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.