The answer is letter a. Social Capital. Social capital refers to the social networks and the reciprocal norms associated with these networks that encourages people to do things for each other.
The radiologic
skeletal survey is most useful tool for detecting occult trauma fractures in children
younger than 2 years old. A current policy states that skeletal survey is
mandatory in all cases of suspected child abuse because younger
children are easier to lift, shake, throw, pull and fall. Moreover, occult fractures can be detected by bone scan
though; bone scan is not specific for fracture but still most useful in
detecting occult rib fractures.
Persistent chlorinated hydrocarbon pesticides persist in the environment and accumulate in the foods chain causing harmful effects on the environment including posing a threat to humans health in the long term. Nonpersistent organophosphate pesticides are more toxic than the former but degrade after a short life span. Therefore they cause immediate harm in case one is in contact with them.
The fact that they do not accumulate in the environment, they are more favourable than chlorinated hydrocarbon pesticides. Chlorinated hydrocarbon pesticides will affect several generations due to their accumulation in the environment. However they don't need to be re-applied hence are less expensive
It is true that dead zones in waterways can occur as the result of fertilizer runoff.
