When there is NO change in the allele frequency, this is called genetic

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.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.