Sponsored photos by

Factors Affecting the activity of enzymes: temperature, substrate concentration, pH, enzyme concentration
of young man thinking daydreaming worried deeply about something, uh oh made a mistake. Negative emotion facial expression feeling
Woman in protective suit pointing at wall affected with mold
Tsunami consequences, rescue male female character evacuation save inflatable boat people victim flood isolated on white, cartoon vector illustration. Natural disasters, person affected high water.
Influencer, opinion leader, team leader, CEO and another business leading concepts. Opinion leader (for example politician) has power to influence opinion mass of people especially customers.

Free stock photosaffect (59)