How are the water molecules in a raindrop held together? A) covalent bonds
B) van der Waals forces
C) attraction between positive charges
D) attraction between negative charges

Amistake occurs during mitosis of a muscle stem cell.how might this affect muscle tissue

Which events are likely to be catastrophic to an ecosystem? select the three correct answers.a-hurricane.b-steady population growth.c-seasonal flooding.d-introducing of an aggressive invasive species.e-tsunami.

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.