These models represent molecules that play a role in the immune system.
In which two ways do these molecules fight pathogens in the body?
OA. They recognize specific pathogens in the body.
DB. They bind to pathogens that enter the body.
c. They eat pathogens that attack the body.
DD. They carry pathogens out of the body.

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a. earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c. earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

What is the difference between how ionic and covalent bonds form