Ben is trying to identify an unknown animal. the animal mainly uses integumentary exchange to obtain oxygen, which involves oxygen passing through its skin. however, the animal also has a small set of lungs that it can use to obtain oxygen. the animal is probably

Environmental differences within ecosystems are generally caused by

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation