Keystone species have a massive impact in their ecosystems. Which of the following is not a factor that is impacted

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent