Answer:
25%
Explanation:
If both parents have dominant recessive genes there is a 25% chance a child will have sickle cell anemia.
 
        
             
        
        
        
Answer:
Yes.
Explanation:
I think that when you introduce yourself you should also ask them about any problems they might have.
 
        
             
        
        
        
I wont write the whole 3 paragraphs but ill give you ideas. so you can write out what you do can how that keeps you safe. 
For driving:
Seatbealt-if i get into a crash it will help me not fly out of the car
Not texting or eating while driving- keeps me focused so i dont crash into something 
I drive at the speed limit-so if i have to suddenly stop then it is easier to do so
work
I wear the appropriate work uniform-to keep me safe from things Ex-if you are a construction worker you wear glassess, gloves and a hard hat to keep you safe from things flying or falling
Leisure activities 
I dont leave the stove on then walk away-prevent the house catching on fire
I  check the fire alarms every 3 months- to make sure if there are fires they will work 
Stuff like that. 
        
             
        
        
        
Answer: The correct option is D (Sensory hair cells)
Explanation:
The ear is one of the sense organs recognised in humans which helps in hearing and for balance maintenance. There are different parts of the ear which includes:
--> the outer ear,
--> the middle ear and 
--> the inner ear.
The semicircular canals are made up of three interconnected tubes which are located in the inner part of the ear. It consists of sensory hair cells which vibrates in response to sound.
Sensory hair cells serves as receptors of both auditory and vestibular systems, therefore are necessary for hearing and balancing. These cells can become damaged due to loud noises and sometimes will die resulting in hearing loss.
 
        
             
        
        
        
I believe that the correct answer is D.