When discussing cholesterol levels with a patient, which of the following is desirable? high cholesterol, low hdlhigh ldl, low cholesterolhigh cholesterol, high ldlhigh hdl, low ldlhigh hdl, high ldl

Low LDL and High HDL

Explanation:

HDL refers to high-density lipoproteins and are considered as good cholesterol. HDL serves to channelize the cholesterol from body tissues and blood to the liver. The liver cells then eliminate the cholesterol. In this way, HDL serves to reduce the blood cholesterol level and should be present in a higher amount in the body.  

On the other hand, LDL is low-density lipoproteins which carry the cholesterol from the liver to the body cells. Since LDL increases the cholesterol in body cells, it is considered as bad cholesterol and should be present in the lower level in the body.  

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.