Complex sentence: However laterite, called murram in East Africa, varies considerably in the proportion of stones (which are usually very small) to earth and sand, and ranges from a hard gravel to a softer earth embedded with small stones.
Split into simpler sentences: However laterite, called "murram" in East Africa, varies considerably in the proportion of stones (which are usually very small) to earth and sand. It ranges from a hard gravel to a softer earth embedded with small stones.