Eubacteria exhibit all of the following except
a. nuclei
b. strong exterior walls made of peptidoglycan
c. a lack of internal compartments
d. size less than 15 u

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.