1. Histone proteins
A. regulate gene expression by reducing the rate of transcription.
B. interact with transcription machinery to increase gene expression.
C. stabilize condensed chromosomal DNA during transcription.
D. bind tightly to DNA and strengthen hydrogen bonds between bases.

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.

it's c.us forest service

answer; the code in musculoskeletal system subsection is associated with deep tissue possibly to the bone;