What vegetable do you get when you cross a dog with a baking ingredient

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?

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the