Normal text Artal
11
5
Fill in each blank with the term that best completes the following sentences.
1.
is the ratio of the amount of water vapor in the air to the
amount of water vapor needed to reach saturation at a given temperature.
2. The temperature at which more condensation than evaporation occurs is called the
3.
is any form of water that falls into Earth's surface from the clouds.
4.
is the characteristic weather conditions in an area over a long
period of time.
5. A long period of climate cooling during which ice sheets spread beyond the polar regions
is called a(n)
Choose the letter of the best answer.

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н, о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged

What are four significant sources of ghgs that come from wostem washington?