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.
tr.v. preÂ·figÂ·ured, preÂ·figÂ·urÂ·ing, preÂ·figÂ·ures. 1. To suggest, indicate, or represent by an antecedent form or model; presage or foreshadow: The paintings of Paul CÃ©zanne prefigured the rise of cubism in the early 1900s.