1 Mechanical digestion is evident, where one can see the breaking down of large food particles into smaller ones after being ground by the teeth. 2  While the chemical changes that take place happen within the body and are not visible.
Using a pre-emergent herbicide around your property could stop these territorial plants from overtaking your home's most valued green space. Pre-emergent herbicide is a type of weed killer that prevents weed seeds from sprouting. Unlike normal herbicide, it is meant to stop weeds from growing in the first place by spraying or spreading a chemical onto the soil so that weeds have difficulty placing down their roots.
Verb. 1. emerge-come out into view, as from concealment; Suddenly, the proprietor emerged from his office. appear-come into sight or view; He suddenly appeared at the wedding; A new star appeared on the horizon. burst-emerge suddenly; The sun burst into view.shell-fall out of the pod or husk; The corn shelled.. emerge-come out into view, as from concealment; Suddenly, the proprietor emerged from his office. appear-come into sight or view; He suddenly appeared at the wedding; A new star appeared on the horizon.