This means that cleared forests, which once had moist, fertile soil and plenty of rain become barren and dry.
Living things need water in their cells. Water is the universal solvent - most of the chemicals a cell needs is dissolved and transported in water. Water is an environment where chemical reactions can occur and water is needed in many of those reactions - like the hydrolysis reaction (needed in the break down of food molecules). If a cell becomes dehydrated chemical reactions slow down. Chemical balance of the cell is changed as waste materials are not removed fast enough, food is not broken down, etc. Water also helps regulate the heat that can build up in a cell during chemical reactions. A dehydrated cell = increase in cell temp. Water content of a cell also affects the pH of a cell environment. Certain reactions occur better at certain pH. Homeostasis is maintaining a balance with the the environment. Without water the balance is upset.
True...........................................................
<span>The Pharmacist are the best person to explain
how a pharmaceutical drug works for they are known to be drug experts. They are
essential part of the healthcare system because they supply medicines in accordance
with a prescription as to heal the patient, do counselling of patients at the time of dispensing of
prescription and non-prescription drugs, provide drug information to other health
professionals, patients and the public and they actively participate in
health-promotion programs. </span>
Therefore, there expertise is indispensable in the healthcare system.
Explanation:
The muscles opposing the movement become the antagonists.
In a movement, like the back extension, the muscles that extend the back are the agonist.
The muscles that produce the opposite movement, which is back flexion, are the abdominals.
