activity feed activity field activity focused activity focuses activity following activity for children activity for everyone activity for kids activity for the whole activity for you activity generated activity generates activity goal activity goes activity going activity group activity groups activity guide activity had activity happens activity has activity has been shown activity has increased activity have activity helps activity here activity history activity ideas activity immediately activity improves activity in canada activity in europe activity in france activity in general activity in human activity in one activity in other activity in rats activity in real activity in response activity in spain activity in the area activity in the body activity in the brain activity in the city activity in the community activity in the country activity in the last activity in the past activity in the presence activity in the region activity in the united states activity in the world activity in this area activity in vivo activity include activity included activity includes activity increased activity increases activity index activity indicates activity indicator activity indicators activity information activity involved activity involves activity involving activity is agriculture activity is associated activity is available activity is based activity is called activity is carried activity is concentrated activity is considered activity is defined activity is detected activity is determined activity is done activity is due activity is essential activity is expected activity is expressed activity is found activity is good activity is important activity is increasing activity is known activity is likely activity is limited activity is low activity is measured activity is observed activity is part activity is performed activity is reduced activity is regulated activity is related