150 points for whoever answers these right : )
alveoli have a large that enables them to absorb a large amount of oxygen.

diameter

volume

surface area

length

lyme disease and rabies are both examples of diseases that can be spread by means of

bacteria

fungi

viruses

infected animals

lyme disease is spread by

eating contaminated food

coughing or sneezing

drinking contaminated water

the bite of an infected tick

is part of the first line of defense against pathogens.

inflammation

b cells

t cells

skin

the molecules on pathogens that enable the immune system to distinguish one kind of pathogen from another are called

b molecules

antibodies

t molecules

antigens

the role of the respiratory system is to bring what substance into the body?

carbon dioxide

red blood cells

oxygen

water

which parts of the respiratory system divide into smaller and smaller tubes in a pattern that resembles the branches of a tree?

pharynx

trachea

epiglottis

bronchi

which kind of pathogen causes athlete’s foot?

viruses

protists

bacteria

fungi

which part of the respiratory system is also part of the digestive system?

pharynx

nose

bronchi

trachea