Question

what are plastics made of?
plant material
fossil fuels
beeswax

the industrial revolution involved
people moving from rural farms to the cities
improved sanitation
new technologies
exponential population growth
all of these

pollution is defined as
contamination caused by human activities
products that do harm in the area where they are released or spilled
any addition to air, water or soil that harms humans or other organisms
contamination from a specific source

Explanation:

1. Plastics are made from fossil - fuels. They are polymers derived from petroleum, natural gas, or coal, which are fossil fuels.
2. The Industrial Revolution involved multiple aspects. People moved from rural farms to cities for factory jobs (urbanization). New technologies like the steam engine were developed. Sanitation improved over time as a result of urban development and public - health initiatives, and there was exponential population growth due to improved living conditions and food production.
3. Pollution is defined as any addition to air, water, or soil that harms humans or other organisms. It can be from human activities or natural sources, and it doesn't have to be from a specific source.

Answer:

1. fossil fuels
2. All of these
3. any addition to air, water, or soil that harms humans or other organisms