In comparison to the embryo, the fetus has more recognizable external features and a more complete set of developing organs. The entire process of embryonic development involves coordinated spatial and temporal changes in gene expression, cell growth and cellular differentiation.
        
             
        
        
        
I would say that the temperate zones though they do have areas such as the Pacific NW that have significant rainfall, but relative to the tropics are apparently relatively dry since they contain most of the world's deserts like the Sahara, the Sonora and the Gobi and the Atacama for example.
        
             
        
        
        
Reflex action refers to the response to a stimulus, while reflex arch refers to the path taken by the reflex action. 
<h3>What is the nervous system? </h3>
1. Low oxygen levels are detected by sensory receptors in the arteries.
2. An impulse is produced by sensory neurons.
3. Certain parts of the brain get an impulse from the central nervous system.
4. Motor neurons carry messages from the brain.
5. Isabel's respiration becomes more rapid.
Reflex actions are immediate, reflexive reactions to stimuli that limit bodily harm. 
Therefore, it travels to the brain via the central nervous system and sends impulses via Isabel's motor neurons, which aid to speed up her breathing.
Learn more about neurons, here:
brainly.com/question/12040535
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The autonomic nervous system (ANS) is the part of the nervous system which is involuntary. It is composed of neurons that is responsible for impulsing the central nervous system to muscles and glands. The hypothalamus is the most important part and main control center of ANS. It is responsible for many homeostatic processes inside our body. Both the autonomic function and the endocrine function is regulated by the hypothalamus.
        
                    
             
        
        
        
Answer:
Yes, tests like urine and blood tests.
Explanation:
Make me brainiest.