Is an organism in its earliest stage of development. In humans, this is the stuff and defined as the developing organism from the fourth day after fertilization to end of the week. After that unborn baby is usually referred to as the fetus.
If the egg was fertilized is alive, The kind of egg you get at the grocery store are not alive
Macrominerals and trace minerals.
Human activities in the united states such as burning fossil fuels for electricity, heat, and certain transportation.
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