Deciduous forest
River
Tundra
The kind of the ecosystem required for the humans to depend on more for the materials that can be helpful to build homes is Deciduous forest. Thus, option second is correct.
Ecosystem refers to the system which involves the interaction of the living things with that of the other living and non-living things that is essential for the survival. In this system all the organisms such as plants, animals, human beings come together and interact to form an existence of life.
Deciduous forest refers to the kind of the forest that shed their leaves at the time of summer. They have the wild variety of trees species such as cottonwood, aspen, oak, maple etc. These varieties of trees are helpful in the constructions of the building and houses.
Therefore, it can be concluded that Deciduous forests are the type of ecosystem that people need to rely on more to get the supplies they need to build their dwellings. Hence, option second is correct.
Learn more about ecosystem here:
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to maintain freedom of trade for the United States
to prevent the Central Powers from winning the war
to break up the colonial empires of European powers
The statement that best describes the main motivation for the United States' entry into World War I is to maintain freedom over trade for the United States. During World War I, Britain and Germany were at war. Germany attempted a quarantine on the British Isles. Britain was one of America's closest trading partners. The United States declared war on Germany after many ships were attacked or sunk by German mines.
Restore peace and stability to Europe.
Hope this helps!
-Payshence