Answer:
Primary air quality standards are designed to protect the health of
✔ children and older people
.
People with asthma can expect clean air under the
✔ primary
standards in the Clean Air Act.
✔ Secondary
air quality standards provide protection of public welfare
animals and crops are covered under the act’s secondary air quality standards.
This is a true or false question i think.
The exact mechanism of immune complex formation is unknown.
