Answer:
Conservation efforts have had a positive impact on ecosystems that have been previously harmed due to human activity. Conservation efforts have helped preserve and even restore habitats that had been damaged or threatened by human activity. They have also helped protect endangered species.
To replace dead cells and to make you grow?
The answer would be car tired break up the ground, causing increased erosion. Rubber in a tire form can not get plants sick(unless it is carrying a disease), plants are used to dappled sunlight so that wouldn’t be a problem, increased fuel usage may be true however it is no concern to the park rangers