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Because it is the nearest planet to Earth that does not have conditions readily deadly to humans (poisonous gases in the atmosphere, extreme heat, etc.), and theoretically could be made more Earthlike.
Humans didn't develop a circulatory system. Early forms of circulatory systems developed in the first animals and organisms to roam the earth. As these species evolved through speciation and genetic variation, new species came to exist that also had circulatory systems. Over time, the systems became more complex and efficient (compare the cardiopulmonary circulatory system of the human compared to the circulation of a fish). Therefore, without circulatory systems there would be no humans nor would there be life as we know it
No. Neither of the two forms of the amino acid aspartate are essential to humans, but are essential as a precursor for four essential amino acids produced by plants, one of which is lysine, without which humans would die.
Not only do trees support humans, they support animals too. In a complicated sense we support the trees as well because they take in our carbon dioxide. Therefore, if there werent any trees giving off oxygen, there would be no humans and if there is no humans no carbon dioxide for the plants.
Of the three, only mercury (a liquid metal) is heavier than water and would sink to the bottom. Gasoline is partly miscible (forms suspensions in water), while turpentine has a lower density than water and would float on top.
Early humans would have first gone to Europe. Australia is a island and early humans would have probably walked to europe far before they rode the ocean to Australia.
The Netherlands was early to settle but ended up with the least amount of land.
Early humans would have first gone to Europe. Australia is a island and early humans would have probably walked to europe far before they rode the ocean to Australia.
They most likely would not. They would be far more likely to settle by a source of water, fertile land and ample game.
Some early attempts at settlement succeeded
Fertile soil, abundant water, security.
Have to work by hand
Some early attempts at settlement succeeded
Studies can relate early humans that lived many years ago in different ways. They would go by stories, clothes and books.
I assume you are referring to humans. If a pregnancy is to be successful the fertilised egg must implant itself in the wall of the womb.
Because it is the nearest planet to Earth that does not have conditions readily deadly to humans (poisonous gases in the atmosphere, extreme heat, etc.), and theoretically could be made more Earthlike.
there would be more of what their using and it will never run out Or yo Momma (: