Human beings evolved during which geologic era? cenozoic mesozoic paleozoic precambria

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.

Donde se encuentra el adn nuclear en un organismo eucariota?

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?