Humans need certain substances to make new cells and repair their tissues. humans acquire these substances by eating nutritious foods. which of the following characteristics of life do the above statements best support? a. living organisms respond to changes in their external environments. b. living organisms use matter and energy for their life processes. c. living organisms regulate their internal environments. d. living organisms must be able to reproduce to promote their species' survival.

If you are in a chronic state of anxiety but also suffer from moment of sudden, intense fear you are problably suffering. from

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.