Answer:
Smog is a serious problem in many cities and continues to harm human health. Ground-level ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide are especially harmful for senior citizens, children, and people with heart and lung conditions such as emphysema, bronchitis, and asthma
Explanation:
An organism may change over time, but it actually never becomes extinct
Photosynthesis? Its when a plant takes in sunlight for ATP (energy).
Answer: i really dont know
Explanation:
im sorry im just trying to get questions
Answer:
THEIR INABILITY TO CROSS THE BLOOD-BRAIN BARRIER AT THERAPEUTIC LEVELS.
Explanation:
Second-generation antihistamines (e.g., loratadine, terfenadine) lack the ability to pass through the blood-brain barrier at certain therapeutic levels.