Answer:
The scientists believe that they arose in Africa and spread to the rest of the world.
Explanation:
A is not correct because the Homo sapiens is not the earliest ancestor of moern humans, but it is the latest.
B is not correct because such evidence is lacking, and even though the Homo sapiens mixed with other hominids in Eurasia and sub-Saharan Africa, they were not of the same species.
C is correct because the evidence suggests for now that the Homo sapiens arose in Africa, and through several migration waves spread out on the other continents.
D is not correct because the Homo sapiens has not been replaced by any other species, as they are the species nowadays known as humans.
Answer:
B. 38 degrees North, 90 Degrees West.
Explanation:
Just checked on a map, definitely 38, 90.
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Answer:
For many people, the Great Wall of China represents proof that humans have built border walls for thousands of years and that they are an effective means to protect the population from an outside threat. These walls also failed and were overrun within a few decades of their construction.
Get a thorough intro to the Great Wall of China: interesting facts, who built it, and why, and how, locations, maps, length, height, Beijing tours.
Answer:
Trees and Plants
Explanation:
Trees and plants in our communities are responsible for the maintenance of our ecosystem. There activities include carbon sequestration ( Plants remove carbon from the atmosphere and fix it in their tissues), generation of oxygen (they generate oxygen as a by-product when photosynthesis occurs), control of soil erosion ( it is well known that plants and trees help in erosion control. in fact places with trees and good vegetation cover rarely suffer the effects of erosion) and habitat provision for wildlife (countless species make the trees and plants their abode or habitat i.e where they live).
This shows how important plants and trees are to our ecosystem.
