Answer:c) Radomized clinical trials
Explanation:Randomied clinical trial is a study used in scientific experiments in which the participants are divided randomly into group that compare different treatments or interventions.
Here participants are chosen by chance to receive clinical interventions.
<span>Renal clients need to avoid salt substitutes because they often contain Potassium. Many people with kidney problems are unable to rid their bodies of excessive potassium which may at times lead to cardiac arrest. Patients should experiment salt-free herbs and flavours in their diet.</span>
The main function of a leaf is to produce food for the plant by photosynthesis. Chlorophyll, the substance that gives plants their characteristic green colour, absorbs light energy. The internal structure of the leaf is protected by the leaf epidermis, which is continuous with the stem epidermis.
Conifer Leaf.
Microphyll Leaf.
Megaphyll Leaf.
A leaf is an above-ground plant organ and it is green. Its main functions are photosynthesis and gas exchange. A leaf is often flat, so it absorbs the most light, and thin, so that the sunlight can get to the chloroplasts in the cells. Most leaves have stomata, which open and close.
The two main functions performed by the leaf are photosynthesis and transpiration. Photosynthesis is the process by which green plants make their food from carbon dioxide and water in the presence of sunlight.
Soil because that has to deal with roots, and photosynthesis happens in leaves. So the soil doesn't have anything to do with photosynthesis.
Saliva gland is held physical and chemical digestion
