Answer:
1250
Explanation:
Used a half life calculator, put in the given variables, and the answer was the remaining quantity. Got it right on the test as well
a pure substance - glass cleaner.
a mechanical mixture - soil, baking powder
or a solution - Perfume
Answer:
No
Explanation:
Some have different things in it
I guess ensuring that you don't suck the insects or specimen collected by ensuring there is a net in the pooter