How do swirls (of hair) in the back on the head form? (is it a trait? )

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

Afossil of a sable antelope with his i was observed in the topmost layer of soil a fossil of a zebra was found in low at the bottom layer contains fossils of a blue in this discovery tells us that what