Approximately when did the first plants and arthropods appear on land? A. 444 Ma B. 488 Ma C. 299 Ma D. 416 Ma

What is the to things that have panes of glass

If an atom is found to have an atomic mass equal to 3 times greater than carbon, what is its atomic mass?

Which of the following particles has a negative charge? neutrino positron gamma ray all of the above none of the above

What are some chemical changes that happen at school, home, nature

1-Which reaction shown below is carried out by nitrifying bacteria? I will mark you as brainlist Choose: A.{ammonium} to {nitrate} B.{nitrate} to {nitrogen gas} C.{nitrogen gas} to{ammonium}

Is this base a physical or chemical property?

Classify each of the following aqueous solutions as a nonelectrolyte, weak electrolyte, or strong electrolyte. a) LiClO4 b) HClO c) CH3CH2CH2OH d) HClO3 e) CuSO4 f) C12H22O11

Give examples of temporaty physical change

Which of these is a source of sediment? A. Fragments of other rocks B. Chemicals and Minerals dissolve in water C. Sea shells D. All of the above

Which resonance forms of silicon dioxide contribute the most to the actual bonding?