Answer:
plz, search it from Google
Explanation:
it is too brief to type
Answer:
When objects from space (meteoroids, space shuttles) enter the atmosphere, they start heating up in the mesosphere.
Explanation:
Answer:
Measuring the mass of metal used in a reaction
Explanation:
A quantitative observation is one in which you use numbers to measure a property.
You would use numbers to record the mass of a metal, e.g., 1 g.
You would use words to describe the colour of a solid, the feel of a liquid, and the niceness of an odour.
The direction of your shadow is going to change directions due to the moving of the sun
Magnet to remove the iron, filter paper (or some filter that could trap sand) to remove the sand, and heat up the salt and water, causing the water to evaporate to separate them.