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.
<span>Physical fitness is something that constantly needs to be worked on to maintain or improve it. Thus, it has a continuous nature. Think of running a mile. If you train for weeks, you can achieve a faster time. Once you attain the goal mile time that you want, you still have to keep training to further maintain it. However, if you stop running, the time it takes to run a mile will increase, and your physical fitness will decrease. This shows the concept of physical fitness as continuous, because to maintain or improve it, you must continue training.</span>
Answer:
7.helpful 9.They always have warning labels
Explanation:
7.They were stopping the bad habits and bringing new ones.
9.They never forget.
Answer:
'remmen' or braking could be the equivalent of fasting, which is an important component for keeping healthy. Times and duration of this activity can vary from person to person depending on their daily routine, health conditions and their purpose of doing so. It involves a certain period of either not drinking/eating anything at all or allowing oneself only to drink/eat certian limited foods in a limited amount.
The answer is D the last option hope this helps
