Examlex
The evolution of which of the following biochemical processes changed the physical and chemical nature of Earth in such a way that most life-forms had to adapt radically or become extinct?
Pairs
In a psychological context, this may refer to a method used in experiments or therapy sessions involving two participants interacting with each other.
Placenta
An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to the growing baby and removing waste products.
Organ
A part of the body composed of tissues that enable it to perform a particular function.
Nourishment
The provision of essential nutrients from food necessary for growth, health, and good condition.
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