The correct answer is C. The pH of a solution can be from 0-7 and represents the acidity if he solution.
Answer:
Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells.
Explanation:
Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.
Answer:
-CAN provide:
-when the blood was shed
-how did it get there?
-what was the sequence of events that must have occurred for this particular pattern to be present
The first organism in a food chain is always an autotroph. They are producers.
