Pernyataan di atas yang benar adalah …. 

a. 1,2, dan 3 

b. 1 dan 3 

c. 2 dan 4

d. 4

e. 1, 2, 3, dan 4

Jawaban: b. 1 dan 3 

Teks untuk soal nomor 4, 5 dan 6!

Text 1

In 2010, researchers estimated that 8 billion kg of plastic entered the ocean in a single year, and that number would sharply increase by 2025. When it enters the ocean, plastic waste disrupts marine ecosystems, travels to central locations, and forms a trash island which can cover an area of more than 1.6 million square km. These plastics never degrade, but rather break up into smaller sizes. They eventually become microplastics that stay in the environment for hundreds of years.

Scientists at the University of California San Diego have invented a new biodegradable material that is designed to replace the commonly used plastics. The material started to biodegrade in seawater within four weeks. The team found that various marine organisms colonize the material and break it into nutrients for their consumption.

The research of this new plastic is joined by experts in biology, chemistry, and marine science. They have shown that it is possible to make durable plastics that also can degrade in the ocean. Plastics should not be going into the ocean in the first place. But now, if they do, this new plastic can become food for microorganisms and not harmful trash.

Text 2

Plastic is everywhere and important to the growth of many industries, such as packaging, building, and automotive. About 83.5 persen of consumer products rely on plastic in some ways. Food without plastic packaging would spoil long before it reaches consumers’ fridges. PVC pipes made of plastic are an essential building part that reduce leakage and corrosion to conserve water and energy. Plastics make cars dramatically lighter, which increases fuel efficiency.