Track and field facilities are usually designed as multi-purpose facilities (tracks with playing fields inside). Sports facilities for track and field athletics are generally used for daily training as well as for staging regional or local competitions. The staging of competitions at higher levels normally entails more extensive requirements for the sports facility, particularly in respect of the infrastructure. Generally athletics tracks are multiâÂ­purpose with the interior of the 400m track used as a pitch for soccer, gridiron and rugby.
Parents have two genes for pos/neg blood type, and only one of them needs to be positive for the parent to have positive blood type. Most positive-blooded people have oneâ¦ positive gene and one negative gene. If both positive parents pass on their negative gene, they can have a child with a negative blood type.
1 Direct Coombs test. A negative test result means that your blood does not have antibodies attached to your red blood cells.  Indirect Coombs test. A negative test result means that your blood is compatible with the blood you are to receive by transfusion. A negative indirect Coombs test for Rh factor (Rh antibody titer) in a pregnant woman means that she has not developed antibodies against the Rh-positive blood of her baby.