1. what do chemical bonds an organism with? 2. a potassium can easily lose 1 electron. what kind of bond will potassium form with chlorine? why?

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

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.