Ascientist must always try to avoid in scientific experiments.

A scientist must always try to avoid bias in scientific experiments. It is important for scientist to avoid leaning into their bias when trying to confirm their hypothesis. As much as possible the scientist should be able to follow the scientific method to avoid bias. 

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.

i need an image of the diagram