Answer:
The presence of moisture is the independent variable.
The earthworm behavior is the dependent variable.
Explanation:
The first one is the right one that will give you points
It represents DNA since it is double stranded.
Answer;
-Matrix
Explanation;
Matrix is used to maintain artificial wall around the tooth preparation.
Cavity preparation is the mechanical alteration of a tooth to receive a restorative material which will return the tooth and area to proper form, function and esthetics.
-Objectives of cavity Preparation: remove all defects and give the necessary protection to the pulp, locate the margins of the restoration as conservatively, form the cavity so that under the forces of mastication the tooth or the restoration will not be displaced and also Allow for the esthetic and functional placement of a restorative material.
Below are supposed to be the choices:
A. water flows in a lake or pond but never flows in a wetland.
<span>B. Wetlands are nesting areas for birds, but lakes and ponds are not. </span>
<span>C. Water does not always cover a wetland as it does a lake or pond. </span>
<span>D. Wetlands are salty, but lakes and ponds are fresh.
</span>
The answer is C. Hope it helps.
