A chemical change has occurred because the wood has turned into a substance that can't be changed back to it's original form. The wood has turned to ash, chemical changes are non reversible.
A disease rapidly spreading in a highly populated area would be an epidemic.
<u>Answer:</u>
The “wheelchair belt” mechanism is the most important mechanism to have on the wheel chair.
<u>Explanation:</u>
- As the patient have very poor control over his trunk so a belt will be perfect to prevent him from falling out of the wheelchair anytime.
- The other options doesn’t make much of important sense than a belt for the patient with muscular dystrophy needs, especially when lost control over the extremities.
- The wheelchair belt will help him in staying in the wheelchair freely without risk of falling off.
Can you ask on english? please
Transgenic.
this is also sometimes called gene targeting.
