Pleasee help!:( im so behind what are some of the challenges to the question "how did life first arise on earth?" why is this question a challenge to study ? write at least 3 complete sentences.
actual answers plz:(

The earliest known life forms fossilized microrganismos found in hydrothermal vent precipitates, that many have lived as early as 4.28gya relatively soon after oceans formed 4.41 gta, and not long after the formation of the earth.

starting in the 1980s many scientists argued that life got its start in scalding, mineral-rich waters streaming out of the deep sea hydrothermal vents evidence for hot start included studies on the tree of life which suggests that most primitive species of microorbs alive today thrive on hot water

earth was formed around 4.54 gya approximately 1/3 of the age of the universe, by accretion form the solar nebula, volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained no oxygen

hopefully this helps, sorry if it doesn't

trachea, alveoli, lung capillaries, arteries

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?