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The correct answer would be through adaptation and eventually over time they had to evolve to the area around them which made them develop over time to have longer necks .
Answer:
immune system
Explanation:
The adaptive immune system reacts specifically to pathogens (germs). It is able to recognize attacking pathogens and fights against certain antigens or foreign substances. The next time a known antigen is encountered, the adaptive immune system can respond faster.
Genetics is the strongest known factor after gender and age. Genetics is one of the strongest factors in, if not all, many types of cancer.
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Answer:
Change occurs in the heredity characteristic of living organism over time.
Explanation:
Change occurs in the heritable characteristics of living organisms with the passage of time is known as evolution. Evolution consist of three basic principles which are variation, heredity, and differential fitness. The organisms evolved with the passage of time due to change in the environmental conditions which able them to survive in that harsh climatic conditions and those which is not evolved can't survive and in the end extinction occur.
