Rocks formed by the cooling and solidification of molten rocks called magma ejected from beneath the earth's crust is
Which of the following is a friend of farmer
The source of food for fishes in the river is called
A farmer bought a farm implement for ₦12,500 in 2007. At the end of the fourth year, he sold it for ₦4,300. The annual depreciation of the implement is
The average weather condition of a place, measured over a long period of time is called
