Calcula la fuerza de atracción entre dos personas. Asume que los dos
cuerpos tienen la misma masa (100 Kg) y que la distancia entre ellas
es d= 1 m El valor de G=10-11 N. m2/kg2

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

When analyzing tree rings, what do scientists assume a thin ring indicates?

The bacteria inside a tube worm would be analogous to what organism in the ocean ecosystem near the waters surface? a. photosynthetic algae b. shrimp c. clown fish d. parasitic lamprey