Which of the following is not a transboundary health hazard along the u. s.-mexico border?
a. abandoned tires
b. raw sewage
c. animal carcasses
d. hazardous waste

How do living things obtain phosphorus

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.

Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f