Scientists recently discovered that there is this specific gene called "Pitx1" that is responsible for the less of pelvic spines in animals 15,000 years ago. Among the most common example of the animals affected by this gene is are the freshwater skittlebacks.
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Answer:
my classes are also boring
Explanation:
Expiration is when food goes bad and idk how to help sorry
Answer:
More tissues.
Explanation:
Each organ is made up of several different types of tissue. Therefore, for every organ in the body, there are many more tissues.