The lack of a mechanism hampered the acceptance of the idea that
a) god created the universe.

b) species change over time.

c) organisms respond to stimuli.

d) none of the above

A) God created the universe.

Explanation:

Some scientists believe that anyone who believes that a god created the universe is mentally lazy because science today gives information that allows one to think about the origin of everything.

This thinking arises from the difficulty people have in accepting that God created the universe. This difficulty exists because there is no scientific evidence to show a mechanism that explains how God created the universe. Without scientific proof people can only believe in something through faith, but faith gives no explanation for anything because it is based on what is supernatural and can border on unreality.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.