Ahouse on stilts would be good to build?
a. near a river.
b. in a city.
c. in the mountains.
d. on the prairie.

A - near a river

It's a good idea to build a house on stilts near a river, espcially if the river is prone to flooding - this way the house will stay dry.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.