question: Complete the next sentence:

How to remove harmful chemicals from your home using houseplants
Determine how many houseplants you need for cleaner air.
Most of the research done on the air filtering effects of houseplants has been conducted as part of nasa's clean air study program. Nasa's recommendation is growing 1 houseplant for every 100 square feet (9 square meters) of your home's floor area.

answer: Ideally, these plants should be spread around your home as much as possible. Reduce the emission of harmful compounds as much as possible.

question: Complete the next sentence:

How to buy a used shipping container
Decide how long you need to use the container.
If you plan to use it for storage for a few months, you may want to consider renting a container. With this option, you will not be required to dispose of it or sell it when you are finished.

answer: Evaluate whether a 20 foot (6.1 m) container or a 40 foot (12. 2 m) container length will suit your needs.

question: Complete the next sentence:

How to write up a science experiment
Start with an abstract.
The abstract is a very short summary of the paper, usually no more than 200 words. This will allow the reader to see in short form what the results of the experiment were and its significance.

answer:
The purpose of this short summary is to provide the reader with enough information on the experiment, so they can see if they want or need to read the entire report. One of the first things researchers do is to do a quick search of similar research projects.