Which of the following is the best evidence (proof) that digestion involves a chemical change? A. The body produces substances that aid in digestion in the mouth (saliva) and stomach (acid)

B. The beginning and end amount are equal

C. Teeth break down food into smaller particles

D. The esophagus uses peristalsis to move the bolus down to the stomach.

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.