It would be appropriate to use Astronomical Units (AU) to measure the distance between which of the following?
A atoms
B. galaxies
C. countries
D. planets

1. key concept list themajor biomes, and give onecharacteristic feature of each.

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water

This is a biological reaction due to a stimulus. i need this quickly !