Answer:
A non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force which acts on an object coming physically in contact with it.
Explanation:
Answer:
From the Silurain to Devonian period
Explanation:
Diversification of fish began during the Silurian period continued during the Devonian Period. The lobe-finned fishes first appeared during the Silurian.
Answer:
Besides the wheel being one of their biggest inventions (which we still use today) Mesopotamian people developed many technologies, among them metalworking, glassmaking, textile weaving, food control, and water storage and irrigation.
Many of these things are still being used, just upgraded.
Explanation:
