Can someone do this worksheet for me i don’t get it

Which are causes of mechanical weathering? check all that apply.oacid raino plant growtho animal actionso carbon dioxideo pressure release

What is the volume of the fluid in the graduated cylinder with accuracy and measured to the correct degree of precision? 41.2 ml 42.0 ml 41.23 ml 41.89 ml

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?