According to the model of the human respiratory system, how do structures in the respiratory system interact to protect the lungs? How might a sinus infection affect the
rest of the respiratory system?

Which table best shows the impacts resulting from human activity? impact of human activities human activity impact forest area cleared to construct an airport increase in oxygen level vegetation cleared to construct an oil mine increase in pollution impact of human activities human activity impact forest area cleared to construct an airport increase in sound pollution vegetation cleared to construct a power plant contamination of water impact of human activities human activity impact beehives cleared from urban areas increase in vegetation dams constructed on a river increase in fish population impact of human activities human activity impact beehives cleared from urban areas increase in bird population dams constructed on a river better quality of water

Which describes the habitat of a frog?

Agroup of students want to live a healthier life style they decide to use one of these following vegetable oils for cooking apex