Answer:
False
Explanation:
Chain migration is the social process by which migrants from a particular town follow others from that town to a particular destination, it assures that the mover is part of an established migrant flow from a common origin to a prepared destination,the prepared destination may be in another country or in a new location within the same country
Step migration involves the place transition from, for example, rural to central city residence through a series of less extreme locational changes, from farm to small town to suburb, and finally to the major central city itself
Answer:
C) Photosynthetic bacteria, invertebrates, vertebrates, reptiles, amphibians, mammal.
Explanation:
- From looking at the above records of evolutionary life on earth the traces of living fossils and organisms that are evolved to the biogenic carbon signatures and the earliest known stromatolite fossils on earth the evidence of 3.7 billion year rocks taken from western Greenland.
- All show the occurrence of first life forms as photosynthetic bacteria and evolution of soil and oxygen in it took place then the invertebrates plat and animals appeared on land and oceans like the nematodes and arthropods, after which started to evolve like the vertebrates like the tetrapod the first fish with four limbs in 360 million years.
- After which reptiles and dinosaurs are the largest land reptiles evolved and then came the amphibian likes and then lead to the evolution of man and other mammals.
Answer:
Melting glaciers when the lakes took their present form.
Nowadays, it's precipitation, rivers, and groundwater springs that bring new water to the great lakes.
Explanation:
