* Children have very short attention spans. * For teenagers it shortens. * Geriatrics concentrate forever, but can't rmember anything.
a very long time.
as long as humans
The wavelength of infrared light is too long for humans to see.
Modern humans have been around for 200,000 years.
Yes, as long as reproduction possible humans will keep forming.
The humans came to earth from a "big bang" long time ago.
As long as "us" refers to humans, then no. Jews are humans too.
As long as "us" refers to humans, there are no differences. Jews are humans too.
as long as humans do....so about 70 years
Very long.
Not to humans. They prey on insects, and have a weak toxin that affects small insects, but is harmless to humans.daddy long legs are not poisonous.
Nits last on humans for 2-4 weeks unless you kill them.