Question

3.
Define the following terms in a sentence:
(a) Abacus
(b) Solar panel
4.
Write a suitable caption to the given picture:
Make sentences expressing purpose using the
given hints
a catalyst: speeds up a chemical process
(b) a clamp: holds two things firmly together​

Answer 1

Answer:

hi

Explanation:

Answer 2

Explanation:

The abacus, also called a counting frame, is a calculating tool that has been in use since ancient times and is still in use today. It was used in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the written Arabic numeral system.

solar panel, or photo-voltaic (PV) module, is an assembly of photo-voltaic cells mounted in a framework for