Collect data: Blood carries many vital substances. Four of these are listed above the Microscopic view. Oxygen and sugar are needed by all body cells. Carbon dioxide and urea are waste products. What are the concentrations of each substance in this sample? Oxygen:
Carbon Dioxide:
Sugar:
Urea:

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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explanation:

i do believe the correct answer would be the third one. location c, because earth is tilted away from the sun at this time

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