Describe in two or more complete sentences which organs are involved in your immune system and how they fight off infections.

check for the pregnancy rating of drug. if its class c or d see if other alternatives

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.