Question

what was the impact of discovery of fire ,wheel and iron on human civilization

Answer 1

fire is useful for cooking.
wheel helps in transportation purposes.
iron is helpful for building hide infrastructures

Answer 2

Human discoveries helped so much in daily activities human being , fire became soo vital to human being because it facilitate warming during cold season and cooking. Wheel is another inventory that boosted transportation. Iron made human being to manufacture tools that are used in cultivation such as hoe. Hoe also helped in making weapons for hunting.

EK