Answer:
One difference between the Rhesus system and the ABO group system is that Rh negative people don't usually possess antibodies against RhD (unless they have been previously exposed to it), whereas in the ABO group system if the antigen is absent from the red blood cells.
Here is the link to read more :)
https://www.mydr.com.au/tests-investigations/blood-typing
decline, ( depends on what you are talking about, i'm thinking more like women are getting less and less populated)
Answer:
The built environment can have a significant impact on human health because it can influence people’s levels of physical activity; the safety of travel; the quality of outdoor air; access to jobs and services; and opportunities for social interaction and recreation.
Explanation:
