Answer:
Scientists used major changes in life forms in the fossil record to form the geologic time scale.
The development of agriculture was set in motion by hitching animals to the plow. The correct option among all the options that are given in the question is the second option. At the beginning, people did not use animals for agricultural purpose, but with passing of time the utility of the animals for agriculture was understood and it made cultivation easy.
The altitude and climate change
3D microscopes contain zooming lens like camera's but some camera's do not have a 3D lens. Both of them record information that can later be analyzed visually. <span />
Answer:
I believe the answer is C but i could be wrong
