Describe the conditions and challenges facing organisms living in the intertidal zone.

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.