Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 149
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Fill in the blank: Scientists envision that polymer chemistry in the 21st century will focus on creating environmentally friendly polymers, including plastics that can be degraded in the environment. For example, polyethylene photodegradable plastics are made from _____________ and _____________ as raw materials ； Microbiologically degradable plastics are produced using _____________ and _____________ as raw materials. Ethylene, CO ； Cellulose, starch
Scientists envision that polymer chemistry in the 21st century will focus on creating environmentally friendly polymers, including plastics that can be degraded in the environment. For example, polyethylene photodegradable plastics are made from ______ethylene_______ and _____CO________ as raw materials ； Microbiologically degradable plastics are produced using _____cellulose________ and ______starch_______ as raw materials.
Ethylene, CO, cellulose, starch.
Scientists envision that polymer chemistry in the 21st century will focus on creating environmentally friendly polymers, including plastics that can be degraded in the environment. For example, polyethylene photodegradable plastics are made from __ethylene___________ and ____CO_________ as raw materials ； Microbiologically degradable plastics are produced using ________ cellulose_____ and _____ starch________ as raw materials.
Scientists envision that polymer chemistry in the 21st century will focus on creating environmentally friendly polymers, including plastics that can be degraded in the environment. For example, polyethylene photodegradable plastics are produced using ethylene and CO as raw materials ； Microbiologically degradable plastics are produced using cellulose and starch as raw materials.
Ethylene CO Cellulose Starch
Scientists envision that polymer chemistry in the 21st century will focus on creating environmentally friendly polymers, including plastics that can be degraded in the environment. For example, polyethylene photodegradable plastics are produced using (ethylene) and (CO) as raw materials ； Microbiologically degradable plastics are produced using (cellulose) and (starch) as raw materials.
Answer: Polyethylene photodegradable plastics are made from __ethylene__ and _CO_ as raw materials； Microbiologically degradable plastics are produced using __cellulose__ and __starch__ as raw materials.
Scientists envision that polymer chemistry in the 21st century will focus on creating environmentally friendly polymers, including plastics that can be degraded in the environment. For example, polyethylene photodegradable plastics are made from __ethylene___________ and _____CO________ as raw materials ； Microbiologically degradable plastics and similar products are made from _cellulose and starch as raw materials____
Ethylene, carbon monoxide, cellulose, starch
Polyethylene photodegradable plastics are produced using __ ethylene __ and _ CO _ as raw materials； Microbiologically degradable plastics are produced using __ cellulose __ and __ starch _ as raw materials.