Answer:
Blunt tinged sputum
Explanation:
Pulmonary contusion is also known as lung contusion. It occurs as as result of the bruising of the lung when the chest has been hit by a power force . This leads to bleeding and well as swelling in the lungs.
A person who has pulmonary contusion would spit out blood tinged sputum when they cough, they may also experience difficulty in breathing and may require oxygen to breathe.
A chest x-ray of the lung is usually required to determine the extent of the damage to the lungs.

A river valley civilization is an agricultural nation or civilization situated beside and drawing sustenance from a river. A "civilization" means a society with large permanent settlements featuring urban development, social satisfaction, specialization of labor, centralized organization, and written or other formal means of communication. A river gives the inhabitants a reliable source of water for drinking and agriculture. Additional benefits include fishing, fertile soil due to annual flooding, and ease of transportation. The first great civilizations, such as those in Mesopotamia and Ancient Egypt, all grew up in river valleys. Tigris River flourished near Mesopotamia civilization and river nile flourished near civilization of Egypt.
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They planned to invade upper New York by way of Lake Champlain and to proceed down the Hudson River to New York City.
Answer:
A region is a unit on the earth's surface that has unifying characteristics such as climate or industry. These characteristics may be human, physical, or cultural. Not only do geographers study characteristics, but they also study how regions around the world may change over time.