Understanding Aggregates and Land Resources

An aggregate is one type of land resource. What is an aggregate?

a layer of solid rock found beneath soil
the top layer of soil
a natural mixture of sand, gravel, and crushed stone
a naturally occurring mineral or rock

Answer:

a natural mixture of sand, gravel, and crushed stone

Explanation:

Soil formation occurs as a result of the decay or the remains of plants and animals which are used up.

Weathering can be defined as the physical and chemical breakdown of rock into smaller pieces called sediment. Weathering can be classified into two categories namely;

I. Physical weathering: it is the process of breaking rocks into pieces without affecting its chemical composition e.g temperature, abrasion, and frost action.

II. Chemical weathering: it is the process of breaking rocks into pieces by chemical action which leads to changes in its chemical composition e.g carbonation, hydration, plant acid, and oxidation.

In Science, one of the types of land resources is generally referred to as an aggregate.

Typically, an aggregate is a natural mixture of sand, gravel, and crushed stone. It's a heterogeneous mixture that is commonly mixed with bitumen, gypsum, cement, lime, and several other adhesives to form mortar or concrete which are used in building and constructions.

What is the correct answer?

Answer:

C

Explanation:

It's correct, have a nice day