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Ask QuestionPosted by Nandini Kathait 6 years, 2 months ago
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Yogita Ingle 6 years, 2 months ago
- Fossils are preserved remains of living organisms from remote past.
- Fossil mainly preserves only a portion of the dead organism (eg: skeleton, bone, teeth etc..)
- Fossils may vary from microscopic (single bacterial cell) to dinosaurs.
- Layers of fossils are formed one after another over years. Deeper the layer where the fossil is found, older it is.
Posted by Shoyoyob Farazi 6 years, 2 months ago
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Posted by Priyanshu Prakash 6 years, 2 months ago
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Sia ? 6 years, 2 months ago
Hominids have evolved from hominoids and share certain common features, but there are major differences as well:
| Hominoids | Hominids |
| By about 24 mya, there emerged a subgroup amongst primates, called Hominoids.This included apes. | By about 5.6 mya, we find evidence of the first hominids |
| Hominoids have a smaller brain than hominids. They are quadrupeds, walking on all fours, but with flexible forelimbs. | Hominids have an upright posture and bipedal locomotion (walking on two feet). There are also marked differences in the hand, which enables the making and use of tools. |
Posted by Tarun Arya 6 years, 2 months ago
- 2 answers
Yogita Ingle 6 years, 2 months ago
- Hominid is one of the member of the biological family called Hominidae on the other hand Monkeys are non Hominoid.
- Hominids does not possess tail on the other hand monkeys possess tail.
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Yogita Ingle 6 years, 2 months ago
According to regional continuity model:
1) homo sapiens were distributed in different parts of the world.
2) the rate of evolution was different in different regions.
3) this created difference in physical appearance
According to replacement model:
1) all the forms of older man was replaced by modern man.
2) originated in Africa.
3) changes in physical apparance due to adaptation.
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Sia ? 6 years, 2 months ago
Positive feedback is a process that occurs in a feedback loop in which the effects of a small disturbance on a system include an increase in the magnitude of the perturbation.
Posted by Rashmi Sharma 6 years, 2 months ago
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