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viruses game # 24185
virus test
1. any organism or particle that can cause an infectious disease is called a
(1 point)
pathogen
viroid
bacteria
virus
2. hiv is considered a retrovirus because it

not too sure but maybe in the hot springs.

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.

when it is at an intermediate population density