1. a hydra is diagrammed below.(picture)

this organ is what type of symmetry?
a. radial
b. bilateral
c. asymmetrical
d. polar

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

The influenza virus cause the flu, but not other diseases. why?

What best describes the structure of the declaration of independence?