Answer:
Scientific models are used to explain and predict the behaviour of real objects or systems and are used in a variety of scientific disciplines, ranging from physics and chemistry to ecology and the Earth sciences.
Explanation:
A. High energy radiation produced in the ozone layer. (:
White gold is made out of yellow gold mixed with other metals, which are added to make the alloy harder and whiter.
Even when mixed with whiter metals, white gold still retains a yellowish hue.
The quality characteristic most often used to evaluate white gold is its karat.
I WOULD SAY d. ALL OF ABOVE
Iron bromide isn't considered magnetic because all iron compounds are not magnetic
