A hormone causes specific changes in a body when it a. o attacks invading harmful microorganisms b. delivers chemicals to nerve cells c. arrives at its special target cells d. makes the body's fluids more acidic Please help me ! ​

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

Plants that have reproductive structures called cones are?

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.