Because asthma is aninheirited trait most of the time. It makes it hard to breath when active and need air. It brings mucus in the lungs and cloggs most of the lungs. Making it hard to breath.
The asthmatic bronchiole is much narrower than the normal bronchiole, and it’s filled with mucus. If enough air does not get to the lungs for gas exchange, the person will need to breathe heavily to compensate.
People's daily experiences can contribute to their belief that earth/ species do not change because we are changing with it as it is happening. Also the changes happen gradually so you can't constantly see to believe it.
Bermuda grass is successful in preventing soil erosion
because the roots of the Bermuda grass can grow deep and it can reach 6 feet
deep more on its surface. Also when the Bermuda grass is damaged it can grow
back quickly.
