atoms, electrons, mitosis, neutrons, proteins, acids, cells, phenotype, lipids, organ, nucleic acids, protons, ions, genotype, bases, meiosis, carbohydrates, organ systems, tissues, molecules, organism concept map

i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.

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.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project