i believe it is 4 im sorry if im wrong
Its 1 because if the water had mercury all of the plants and animals would die.
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.
layer 3 is younger than layer 6.