Gypsum is a chemical sedimentary rock.
Answer:
<u>Mould board plough, disc plough, soil stirring plough, ridger plough,</u> tool frames/carriers with mouldboard plough or tillage sweeps, etc. are improved implements designed for breaking soil. Ploughs are used to break soil and invert furrow slice to control weeds, etc.
A) China 1.4 billion (India had 1.3 billion)
hears a region for you region V. bicol or Philippines or sorsogon
The Hadean era was before rocks were formed so I’d say b) . Hope this helps :)
