The complement system is a barrier of the immune system. the complement system is a group of in the blood that detect pathogens that have entered the body. the complement system can cause , the swelling of a part of the body accompanied by redness, swelling, and pain as a response to infection.

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere

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.

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring