Explain why antibiotics such as penicillin, kill bacteria and not viruses

Antibiotics cannot kill virus.

Explanation:

Viruses are different from bacteria.They have different ways of survival and reproduction.Viruses have a protective protein coat instead of cell wall.But many Antibiotics including penicillin work by attacking cell wall.

Thus bacteria can be attacked by antibiotics but viruses cannot.

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.

your answer is "the 1950's"