Answer:
This fluctuations occurs due to climate change.
Explanation:
Climate change occurs due to the presence of pollutant in the atmosphere of earth such as carbondioxide gas which is released from vehicles and industries. This carbondioxide is a greenhouse gas which absorb heat from the reflected solar radiation which increases the temperature of the surrounding and causes global warming. Due to this change, temperature fluctuate.
The biggest problem for racial integration is that people live in segregated areas: so simply a school can have a majority of children from one background because the area around the school is inhabited by people of this background.
So the correct answer is d. Segregated housing patterns are still common in many communities.
