Ddt was used to do what? a. fetralizinh soil b. kill insects c. form ozone d. feeding animals

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment