A carrot is a modified plant root. It is a taproot that is also used as a nutrient storage organ. Are the galls that you observed spread evenly over the carrot surface? If not, which root tissues are most affected? Why? If all the bacteria added to your carrot slices were to killed by penicillin after the galls were induced, would the galls persist? Why?

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.

yes? sounds right, but you didn’t ask a question.

b.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.