how many years ago for the first time ape- like man appeard in the earth? a. 2 million years b. 1.50 million years c.1.20 million years d.1.75 million years.
Answers
Explanation:
Primates are remarkably recent animals. Most animal species flourished and became extinct long before the first monkeys and their prosimian ancestors evolved. While the earth is about 4.54 billion years old and the first life dates to at least 3.5 billion years ago, the first primates did not appear until around 50-55 million years ago. That was10-15 million years after the dinosaurs had become extinct.
65,000,000 years ago
present
Transitional primate-like creatures were evolving by the end of the Mesozoic Era (ca. 65.5 million years ago). At that time, the world was very different from today. The continents were in other locations and they had somewhat different shapes. North America was still connected to Europe but not to South America. India was not yet part of Asia but heading towards it at a surprisingly rapid rate of nearly 8 inches (20 cm.) per year. Australia was close to Antarctica. Most land masses had warm tropical or subtropical climates.
The flora and fauna
at the end of the Mesozoic Era would have seemed alien since most of the plants and animals that are familiar to us had not yet evolved. Large reptiles were beginning to be replaced by mammals as the dominant large land animals. Among the mammals, there were a few archaic egg-layers (monotremes) like the ancestors of the platypus and echidna. There were larger numbers of pouched opossum-like mammals (marsupials). The few placental mammals that existed at that time mainly consisted of the Insectivore
ancestors of primates. Most of the mammal species were small, ranging from about the size of a mouse up to a medium size domesticated dog.