The composition of the protoplanetary disk varies with distance from the protostar due to temperature.
Starting with those closest to the protostar, place these materials in order based on where they can be found predominantly in their solid states
a. 1. Methane, Ammonia, Carbon Dioxide 2. Iron, silicates, carbon 3. Water
b. 1. Iron, silicates, carbon 2. Water 3. Methane, Ammonia, Carbon Dioxide
c. 1. Iron, silicates, carbon 2. Methane, Ammonia, Carbon Dioxide 3. Water
d. 1. Water 2. Iron, silicates, carbon 3. Methane, Ammonia, Carbon Dioxide

b) 1. Iron, silicates, carbon

   2. Water

   3. Methane, Ammonia, Carbon Dioxide.

Explanation:

Protoplanetry disk is the disk of gases and clouds of dust that rotates around the newly made star. The temperature of the protoplanetry disk actually determines the type of the planet that is to be formed. Inner part of the protoplanetry disk is closer to the sun thats why it is the hottest and denser part and composed of the materials like Iron, silicates, carbon as they have high melting points. Then comes those materials that exist in the solid form at lower temperatures such as the volatile materials like water. Ater that the protoplanetry disk is made of highly volatile materials that exists in solid from only at low coldest temperatures. So the outer part of the protoplanetry disk  is made up of the Methane, Ammonia and Carbon Dioxide.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.  

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;