This is cyclic change because the population is consistently going up and back down.
<span>continue to divide even when they are tightly packed together.
Hope this helps(;</span>
Answer:
stimulants (e.g. cocaine)
depressants (e.g. alcohol)
opium-related painkillers (e.g. heroin)
hallucinogens (e.g. LSD)
Alleles
I had bio a while ago though so I could be wrong...
