Intellectual Olympiad in Soil Science - 2026 ongoing
1000 ₸
Subject: Soil Science Level: II (I is easiest, XII is hardest)
Category: student
Question language: English
Questions: 15
Example question: Which soil horizon is typically characterized by the accumulation of organic matter and intense biological activity at the surface of a mineral soil? The A horizon, The C horizon, The R horizon, The E horizon