The supplies nutrients to the embryo and is the source of blood cells during early embryonic development

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.

Depending on the organism the number of in a cell may change

The idea of spontaneous generation was disproved by in a experiment involving jars of meat