Answer:
a pH meter is the correct answer
Explanation:
i just did the test
 
        
             
        
        
        
Explanation:
Explanation: 
<em>Complete answer: </em>
<em>a. foot tapping rhythm
</em>
<em>b. long-term memory
</em>
<em>c. breath holding
</em>
<em>d. circadian rhythm
</em>
The cerebral cortex plays a major role in all of the following except d. circadian rhythm
The cerebrum is split into the left and right hemispheres, while the cerebral cortex makes up the outer layer of the brain and is comprised of gray matter. Gray matter is made up of unmyelinated neurons. 
The cerebral cortex is described as having motor, sensory and association areas, and is involved in thought, memory, perception, awareness, and language. Overall, it is associated with voluntary movement, thus the circadian rhythm, involved in homeostasis and the autonomic nervous system, is unrelated to its function.
Learn more about the autonomic nervous system at brainly.com/question/10386413
Learn more about homeostasis at brainly.com/question/1601808
#LearnWithBrainly
 
        
             
        
        
        
They have very sharp teeth to cut through their prey, or try to escape if they are trapped
Their bodies are very narrow, enabling them to be very quick and nimble, it also enables them to hide it tight spaces
Their teeth also enables them to escape a fishermen's line ( I'm a fishermen and I've lost many barracuda due to those teeth.)
I hope this helped
        
             
        
        
        
Answer:
they carry out experiments to understand it
Explanation:
Scientists raise hypotheses which are tested by experiments made under controlled conditions in order to explain a particular topic. When a hypothesis is confirmed by the experimental data, the evidence obtained from this experiment provides the basis to increase the scientific knowledge about a particular issue. In consequence, experimentation can be considered as a critical step in the scientific method and research aims to advance knowledge of a particular phenomenon by confirming a hypothesis, which must be testable (i.e. verifiable as a result of further experimentations).
 
        
             
        
        
        
Protein synthesis in eukaryotic (plants and animal cells.) cells, occur in the ribosomes.