40 граммов поваренной соли раствор 24 л воды чему равен процентная концентрация этого раствора

1) both plastic and paper bags harm the environment 2)paper comes from trees 3) manufacturing paper uses harmful chemicals to wash, bleach and color the final product, we also cut down many trees. 4)the oil industry causes pollution, contaminates the air we breath. 5)in a landfill or a recycling center 6) it takes years to break down in a landfill, and even recycling takes electricity and more chemicals 7)in landfills, just thrown away. 8) a single plastic bag takes more than a1000 years to decompose, kills marine life, when they mistakenly eat it. 9)carry a reusable shopping bag

1)paper bags and plastic bags are harm the environment

2)paper came from trees

4)paper came from trees

остальные не понимаю