ignore this bit it allows me to summit my question
spiders belong to a group of arachnids.
arachnids have the following traits :
they have two body parts.
they have eight legs unlike insects which have 6 legs.
they have no wings.
these traits distinguish them from insects.
the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.
this is because the evolution of one species is independent of the other species.
answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.
a . nucleus