When the number of organisms increases in an ecosystem, the a)number of droughts usually decreases b) number of resources is usually the same c) available water supply usually increases d) carrying capacity usually increases

number of resources is usually the same

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.