In seawater, a fish must excrete 6 mL of salt each day. How many liters is this?

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )