no
I hadn't realized that species other than humans had made motorcycles! Unless you know otherwise
less ... Compare to other species the human specie is young
Humans are not endangered. Humans are the species with the capability to make all other animals endangered with our advanced technology and weopons. Humans are basically the most plentiful species on earth other than maybe insects.
Water is not nonrenewable. But it is getting harder and harder for the earth to clean it faster than humans pollute it.
Dogs are older than human because they leave longer than any other creatures
Ploidy is another species that has 23 chromosomes. Many organisms have more than two sets of homologous chromosomes.
Technically, nothing. Humans are a species of Great Ape. Humans have a notably higher cranial capacity than other extant ape species, however. They also are the most comfortably bipedal, though all apes can walk upright, and they have significantly smaller canine teeth than other apes.
no
A wolf's worst predator is the human. It is ironic, however humans kill more wolves than any other species. They hunt them and destroy their land for resources.
Pollution
humans --------------------------------------- There are far more insects than there are humans!