Which is one way that water helps living things? a temperature regulation
b. oxygen transportation
c. heat absorption
d. nutrient production

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

One similarity and one difference between an element and a mixture of elements

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.