Answer: from the mouth to stomach
Explanation: mechanical digestion takes place when the food travels down from the mouth to stomach. Chemical digestion occurs from the mouth to intestine.
Under the ocean is wet and in continents its dry
Because the toxins from gas are not good to breath in and eventually we will al die from it
Challenges for growing crops are you don't know if it will be successful, you have to have enough water, the dirt has to be fertile, and the weather may affect how the plant grows.
