Which is considered a chemical mutagen? tanning beds tobacco x-rays precious metals mark this and return save and exit

The correct answer is tobacco.  

An agent that exhibits the tendency to modify the genetic material of a species, thereby resulting in mutation is known as a mutagen. Tobacco is a chemical mutagen. Tobacco smoke comprises a mixture of many chemicals that incorporates about 60 carcinogens, that is, the chemicals that can result in cancer.  

One of the examples is benzopyrene found in tobacco smoke, which has been found to result in mutations. Therefore, tobacco is regarded as a chemical mutagen.  

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.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.