1. A. In the past, with humans absent, more intense competition for food between carnivores probably
led to a need to eat kills quickly and completely, resulting in more broken fangs.
B.FOR the past eight years, America's government has declined to fund new research into one of the
world's most promising medical technologies: the use of human embryonic stem cells to repair or
replace damaged tissue in the diseased and injured.
(a) II
(b) FF
(C) FI
(d) IF
(e) JJ
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2and3.Are.Anwser.Is.question
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In old times, when humans were not present on the planet, the competition of food was very intense and sever among the different species of animals.
Explanation:
- In old times, when humans were not present on the planet, the competition of food was very intense and sever among the different species of animals.
- The animals used to hunt and kill their own species in order to get food for their survival.
- Specially carnivores as they feed on other animals therefore they started killing other animals to meet their food requirements.
- As they kill other animals with their teeth, therefore their teeth started to break and also became sharp with the passage of time. Which also helped them to kill the pray.
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