Answer:
variation
Explanation:
he was trying to produce different types of species from over time they cross-breed and make a new type of bird.
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The first one, Added removed or changed. Mutation as in anything that would cause the slightest change.
Answer:
Therefore,when carbon monoxide is present,it blind to hemoglobin preferentially over oxygn.As a result,oxygen cannot blind to hemoglobin ,so very little oxygen is transported through the body carbon monoxide is a colorless odorless gas and is therefore difficult detect.
Answer:
controlled experiment
Explanation:
you need to do it more than once. and you don't need to answer questions
They work together to ensure the body has oxygen in its blood to make sure it functions properly
