Answer:
Stem cells are cells in the human body that have the ability to develop into many other body cell types. Stem cells are very useful for drug development, research, they aren't likely to be rejected in transplants, and are used to repair damaged or diseased cells and tissues. However, they cannot be grown for long periods of time, there are very small numbers in each tissue and cell making them very hard to find, and for certain studies they have been shown to cause cancer. To be honest, using them in research does have its pros and cons, they are very useful and easier to use in research, plus they can help repair damaged and diseased cell tissues. But at the same time they can be difficult to use correctly and properly, it can cause serious health problems if cancer doesn't take place. I think that using them in research is okay, as long as they are used correctly and properly.
Hope this helps! :)
temperature never stays the same on a day to day basis
Heat you can turn on and off
Thermal energy is something that you can well control on your own by yourself
An autotroph is an organism that can build its own food
Answer:
Most bacteria growth best within certain range of condition. By manipulating temperature and time, air, the proper amount of water acid and salt, you can eliminate, control, or reduce the rate at which bacteria grow.
Explanation:
Like all living things, bacteria need food, water and the proper environment to live and grow. The food product itself supplies the food and water needed for bacterial growth.he exact environmental requirements can vary from one type of bacteria to another. Most bacteria grow best within certain ranges of temperature, and have specific requirements related to their need for air, the proper amount of water, acid and salt. By controlling nutrients, water, temperature and time, air, acidity, and salt, you can eliminate, control, or reduce the rate at which bacteria grow.
Bacterias need following optimum conditions to grow
1. Food (nutrients)
2. Water (moisture)
3. Proper temperature
4. Time
5. Air, no air, minimal air
6. Proper acidity (pH)
7. Salt levels
By altering anyone of them we can restrict or reduce the rate at which the bacteria grow.