The symptom and sign which indicate placenta previa here is Pinless vaginal bleeding.
Placenta previa is a condition where the placenta is covering the cervix or it is attached close to the cervix.
In various times of pregnancy, bleeding may occur. It can not be a serious complication. The cause of the bleeding may depend on the amount of pain or the time of bleeding in pregnancy.
In the first trimester, bleeding may occur and may be due to ectopic pregnancy, miscarriage, implantation of the placenta in the uterus or infection.
Bleeding in late pregnancy lets say twenty weeks can be due to placenta previa or placental abruption.
        
             
        
        
        
Answer:
True
Explanation:
Angle of Solar Radiation and Temperature
When the sun's rays strike Earth's surface near the equator, the incoming solar radiation is more direct (nearly perpendicular or closer to a 90˚ angle). Therefore, the solar radiation is concentrated over a smaller surface area, causing warmer temperatures.
 
        
             
        
        
        
Iodine products that are used on human tissues as anti-infection agents are called antiseptic. The antiseptics are used and applied on a tissue in order to reduce the possibility of infection, sepsis, or putrefaction. They i<span>nclude hydrogen peroxide, rubbing alcohol, and iodine. 
The most commonly usage is </span><span> cleaning  the skin before an injection  and cleaning wounds.</span>
        
             
        
        
        
Answer:
The three parts of an amino acid are the carboxyl group, the amino group, and the central carbon that contains the R group.
Explanation:
 
        
             
        
        
        
The answer to this is C- electromagnetic waves.
Hope that helps :)