Please help me law of conservation of matter facts or characteristics explain in your own words

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

What effect might melting sea ice have for people who live in coastal areas?

Joan writes four numbers on the board in standard form, and then she writes their scientific notation