The large number of alveoli in lungs improve diffusion by
a. decreasing the distance for diffusion
b. increasing the surface area for diffusion
c. increasing the concentration difference
d. changing the diffusion constant

The  central dogma  of molecular biology is centered upon the process of protein synthesis, in which the information from dna is transcribed and translated, resulting in multiple amino acids being joined to form a)lipidsb)proteinsc)carbohydratesd)nucleic acids

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.