28. Eubacteria can be distinguished from archaebacteria by a. The presence of a true nucleus
b. Being multicellular
Difference in the makeup of cell wall
d. The presence of organelles

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .