Answer:
1. Without a calendar we could not know when to celebrate any of the festivals on particular days. We would even get the days of the week confused after a while. We would not be able to tell when a year had gone by, so it would be hard to keep track of someone's age.
2. Without numbers we wouldn't be able to count or measure anything. We would forget our age one day, and possibly forget how to count. Also we wouldn't be able to tell time, unless we used the sun. It would make life very problematic.
3. It would take very long to get us somewhere. We could no longer travel with airplanes, since they use wheels to take off. Such a simple thing as going to the grocery store, would turn into a huge task. Traveling would take very long to do, or might be non-existent if we didn't use horses.
Energy typically from the sun drives the water cycle.
The sun evaporates water from lakes, sea, ocean... into water vapor. The water vapor is stored in the clouds and when it rains, the cycle starts all over again
When there is seafloor spreading, it means that two plates C.)are moving away from each other creating ridges.
<h3>What causes seafloor spreading?</h3>
Seafloor spreading only happens in divergent boundaries between plates which means that the plates are moving away from each other.
When this happens, ridges are created as less-dense material rises from the mantle which leads to land being formed.
Find out more on seafloor spreading at brainly.com/question/870586
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At the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. The outer core is about 1,355 miles (2,180 km) thick.
