Plants not only purify air and _____ but also help create a comfortable place for living, working and shopping

A) reduce nitrogen?
B) provide atmosphere?
C) produce oxygen
D) increase carbon dioxide


C

Trades & Technology

You might also like to view...

The primary reason for most seeding failures is the lack of ____________________

Fill in the blank(s) with correct word

Trades & Technology

To contain backing gas in a pipe of small diameter, or short sections of pipe, ____.

A. the ends of the pipe are capped B. the pipe is plugged on either side of the weld C. the pipe is plugged using water-soluble plugs D. the pipe is plugged using soft plastic bags

Trades & Technology

An adjustable boring head is used to machine:

A) Internal grooves and recesses B) Non standard size holes C) Faces perpendicular to bored holes D) All of the above

Trades & Technology

Alternating current frequency is measured in:

A) Bandwidth (BW). B) Power Width Modulations (PWM). C) Gigabytes (GB). D) Hertz (Hz).

Trades & Technology