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.
Definition of Emergent Literacy. Refers to the fact that young children learn about books, print, and writing long before they can read and write or before going to school.This term was first used in 1966 by Marie Clay, and developed further from the 80s.efers to the fact that young children learn about books, print, and writing long before they can read and write or before going to school. This term was first used in 1966 by Marie Clay, and developed further from the 80s.