Which part of the respiratory system is task to clean the air and channels it into the lungs through two large tubes called bronchi.

What makes bicycles go uphill

Deleted question this way because of no other method

What causes populations to compete?

How would being able to bring water into the gills when the mouth is closed benefit a bottom-dwelling shark or ray?

Would mouth to mouth resuscitation between two fish work?

Vaccines are weekend forms of disease causing microorganisms which are given to patients to prevent diseases. After the vaccine is administered what response to the vaccine is triggered in the body? A. Secretion of antigens by lymphocytes B.

Which process allows a mammal to continue to grow in size

A what is a scientific instrument used to sense and record movements in Earth's Lithosphere?

Which process releases energy instead of using energy?

In what way is the treaty on plant genetic resources limited? A. It neglects the loss of biodiversity B. It excludes the use of seed banks C. It excludes countries other than the United States. D. It neglects the loss of habitat