well it happens when a womans egg gets fertilized from a man
Our health is crucial when it comes to the environment. The environment can affect our health through physical, internal, and chemical factors. For example, if the environment is extremely polluted, us humans would get sick easily and there would be many birth defects.
<span>Rickets is a:
-bone disease
</span><span><span>Rickets is a skeletal disorder that results from lack of vitamin D, calcium or phosphate</span>
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