Answer:
true
Explanation:
I took this class, but if I remember so it is true
I believe that most mature soils have three soil horizons. That is Horizon A, Horizon B, and Horizon C. Horizon A, also called the top soil contains a mixture of mineral matter and organic matter, as well as many insects, fungi, and microorganisms. Horizon B, also called the sub soil, contains fine clay particles washed out of horizon A. Horizon C contains partially weathered parent material.
All you need is :
one egg
vinegar
and a glass or bowl that is taller than the egg
tilt the glass when you put the egg in so it doesn't brake then pour vinegar in to cover the egg and watch as its shell disolves
