Answer:
The answer is D.
Explanation:
People moved to the cities to find jobs because they could not find jobs anywhere else. Most people go their work in factories. Many of the jobs where unsafe and many people lost fingers or other body parts.
Evolutionary most of animals change their teeth over time . So reason Evolution
C.stressors are activities that can cause danger
The answer is adverse reactions
Colder air masses are temped Polar or Arctic. While warmer air masses are termed Tropical. Continental and Superior air masses are dry while maritime monsoon air masses are moist. Weather fronts separate air ,asses with different density (Temperature and/or Moisture) characteristics.
I Hope This Helped!
