Answer:
1 is true
Explanation:
Liquid iron and nickel would be heavy and sink, they later formed earths core while the crustal rocks became the surface.
Answer is: Carl Ritter.
Carl Ritter (1779 –1859) was a German geographer (<span>one of the founders of modern </span>geography) and scientist.
His nineteen-volume work is "<span>Geography in Relation to Nature and the History of Mankind"</span>, written 1816–1859. Work <span>was left incomplete at the time of Ritter's death.</span>
Solar energy (that arrives as sunlight) from the sun is the source of radiation for both the earth's atmosphere and the greenhouse. The solar energy used by the plants for photosynthesis and used by humans as a source of energy is excessively harmful if there is a prolonged exposure.
I am unsure of how to answer this completely, but I will give it my best.
It could be meant that there is no physical boundary holding them apart and that the world's oceans simply flow into each other rather than being separated. Such as the pacific and Atlantic. They are not held apart, they flow around countries and flow into each other at a certain point.
