A) Autotrophs because heterotrophs don't make their own food and rely on other organisms while autotrophs are organisms such as plants who use photosynthesis to make their own food.
        
             
        
        
        
Answer:
Movement of the tympanic membrane causes displacement of the malleus.
Movement of the malleus causes movement of the incus and stapes.
Movement of the oval window establishes pressure waves in the perilymph of the vestibular duct
The pressure wave distorts the basilar membrane on its way to the round window
Distortion of the basilar membrane forces the hair cells of the organ of Corti toward or away from the tectorial membrane
Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve.
The different frequency  sound waves are relay as action potential to the auditory center  of the brain.The brain analysis these, based on the frequencies received.This may Interpreted as  high pitch, or low pitch sounds.
Explanation:
 
        
             
        
        
        
You would use A.) Triple beam balance as it is the only option that measures mass. 
B measures length, C and D measure volume.
 
        
             
        
        
        
Answer:
These pairs of genes then determine certain physical features or traits. The genes that you have in your body right now make up your genotype. This genotype then determines your physical appearance, which is called your phenotype. In this activity, you will be given two sets of chromosomes.
Explanation: