Asthma is due to spasms in the bronchi of the lungs making the task of breathing require more effort.
Answer: absorption
Explanation: “The process or action by which one thing absorbs or is absorbed by another.”
In this case, matter and energy is absorbed.
Carbohydrates are broken down and they release energy.
Smallpox- began Africa, spread through trade and human interaction.
Chestnut blight-isn't this a chestnut found in America?