Heartworms can infest the hearts of animals like cats and dogs. the worms get nutrients from the animal, while the animal will die from the infestation. this is an example of parasitism commensalism mutualism

answer'(basidium)the spore--bearing structure of a basidiomycete is called a basidiocarp; ///

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.

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