It is currently unknown whether there is a time lag -- a delay between changes in PM exposures and changes in mortality rates -- in the chronic PM/mortality relationship.
It is unknown if there is a time lag.
A time lag is known.
the lady is wearing a veil
We're living in times that are indifferent to us.
The Department refuses to disclose any information regarding how it reviews information.
A child plays outside.
And you are not going to try to implement you amazing plan?
Resources expended in supporting efforts such as community legal education don't outreach state planning