¿De que maneras puede estar el agua en la
tierra?​

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Can someone i have no idea of how to do this.