Answer:
Explanation:
A strainer is a device that is used to remove foreign/specific "dirt" from a liquid (usually when flowing). Strainers usually have holes just like a sieve except that this time, <u>it separates </u><u>dirt</u><u> (tiny solids) from the liquid unlike a sieve that separates solid particles of different sizes</u>.
It should however be noted that sometimes the strainer is designed to remove a valuable "dirt" from the flowing liquid.
I think structure however I am not sure so keep that in mind.
What are white blood cells protect against pathogens and aid in blood clotting when injuries are sustained.