Plants and people.

1. Which sentence is an opinion?

• 𝖠 Not much fresh air can make its way into a tightly

  closed building.

• 𝖡 Often, there is more than one thing that causes a building to

  have unhealthy air.

• 𝖢 All plants produce oxygen.

• 𝖣 Plants really are amazing.

2. What causes a building to become “sick”?

• 𝖠 low heating and cooling costs

• 𝖡 too many people working in one place

• 𝖢 chemicals in the air

• 𝖣 too many plants in the building

3. The author wrote this passage mainly to —

• 𝖠 give information about plants and buildings.

• 𝖡 encourage people to buy more plants.

• 𝖢 tell an entertaining story about plants.

• 𝖣 describe the work that scientists do.

Describe two ways that plants help to create a healthful

environment.

Choose three options.

• Plants produce nitrogen.

• take in carbon dioxide

• add moisture to dry indoor air

• remove harmful chemicals from the air

Why did space scientists build the biohome?

• 𝖠 to find ways to improve the air inside spacecraft

• 𝖡 to provide a place for astronauts to live

• 𝖢 to have a clean place for growing healthy plants

• 𝖣 to learn more about sick buildings

Which statement best tells how the author of this passage

feels about plants?

• 𝖠 Plants might be good for people in some cases.

• 𝖡 Some people may get itchy eyes or throats from plants.

• 𝖢 People need plants mainly because of their beauty.

• 𝖣 Plants are nice to look at and good for our health.