Question

B. Answer in one - two sentence:
(8) Which zone of a flame does a goldsmith use for melting gold and silver?
(9) Which gas is necessary for the combustion of a substance?
(10) What is ignition temperature?
(11) What is Red Data Book?
(12) What is a cork used by Robert Hooke?
(13) How is sound produced?
(14) How is zygote formed?​

Answer 1

Answer:

8-Goldsmith use blue for melting gold and silver

9-oxygen

10-The temperature at which substance start burning

11-used for endangered species