Answer:
a- black powder
Explanation:
it is powder and has no pigment
B pimples can last more than 2 days
Answer:
here are some:
1) market failure, 2) the tragedy of the commons, and 3) the underprovisioning of public goods. One of the first principles of free markets is that for them to work effec- tively, the full costs of an activity must be borne by the involved parties.
Explanation:
hope this helps <3
Hydrogen or ionic is the answer. But I would go with ionic
