[…] five hours, or five hours and a half, in short days, is considered to be as much as horses are capable of sustaining, and yokings of this duration require no refreshment on the ground.
B. B. Thomas et al. show that the animal is nocturnal with their foraging habits during the scotic phase after the onset of darkness.
He keepeth back his soul from the pit.
Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: the ability to convert water and carbon dioxide into carbohydrates and waste oxygen using solar energy.
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