● The Palaeolithic period: ◦ It extends from 2 million years ago to about 12,000 years ago . So, pair 1 correct. ◦ It is divided into the Lower, Middle, and Upper Palaeolithic . ● The Mesolithic Period: ◦ Also known as the Middle stone. ◦ The period saw environmental changes. ◦ From about 12,000 years ago to 10,000 years ago. So, pair 2 is NOT correct. ◦ Microliths are found. ● The Neolithic Period: ◦ From about 10,000 years ago. So, pair 3 is NOT correct.