The chain is not in order it should be pro-met-leu-tyr
Hello,
The answer is option D "<span>natural science technician".
Reason:
A natural science technician studies in natural resources for example: water or ground water.
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Hope this helps!
~Nonportrit</span>
Changing only one variable at a time is a rule for conducting a controlled
experiment.
Controlled experiment involves the use of dependent and independent
variables . Changes in the independent variable brings about a
corresponding change in the dependent variable which is then recorded.
It is however important to note that changing more than only one variable at
a time won't accurately determine if the changes in the results were as a
result of one cause. This is why only one variable has to be changed at a
time.
Read more about Hypotheses here brainly.com/question/12416923
Answer:
That science was able to find more things and discover a lot more things than 300 million years ago.
Explanation:
The aquatic animal's respiratory system is different from the human respiratory system because the aquatic animals have gills while the human has lungs.
<h3>What is respiratory system?</h3>
The respiratory system is one of the major systems of the body that helps in the intake of oxygen and removal of carbondioxide as waste products from the body.
The aquatic animals are those animals that live, reproduce and survive in the water while human survive in the terrestrial ecosystem.
Due to the difference in the ecosystem existing between the aquatic animals and humans, they have different respiratory system that functions differently too.
The aquatic animals possess gills which can absorb oxygen from water while the human has lungs which allows the diffuser of oxygen with release of carbon dioxide.
Learn more about respiration here:
brainly.com/question/2809259
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