Hormones are chemical molecules produced by indoor green glands one such endocrine gland is the thyroid gland which synthesizes the thyroid hormone which in turn affects the heart muscles which two statements describe probable reason for the function of the hormone

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digestion

it excretes wastes

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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