Commas
Snowflakes begin to form when water in the atmosphere freezes causing the water molecules to bond into a hexagonal shape.
Snowflakes begin to form when water in the atmosphere freezes, causing the water molecules to bond into a hexagonal shape.
During the snowflake's descent from Earth's upper atmosphere, other water vapor molecules BUMP or BUMPS into the hexagonal structure.
BUMP
The manager promised to look [in to; into; unto; omit] the customer's complaint.
into
The nature trail is six feet wide and seven miles long.
No Change
Diego Riveras art appeared on the outside walls of buildings in Mexico City.
Diego Rivera's art appeared on the outside walls of buildings in Mexico City.
All snowflakes are unique. The rare "triangular" snowflake for example confounded scientists for year because it apparently defied the basic laws of chemistry.
All snowflakes are unique. The rare "triangular" snowflake, for example, confounded scientists for year because it apparently defied the basic laws of chemistry.
Experiments have revealed that triangular snowflakes begin with the same process of chemical bonding and FORM or FORMS a hexagonal shape.
FORM
The office will open sometime [in, within, inside, about] a half hour.
within
The path slithers through the forest like a snake curving and bending along the banks of the river.
The path slithers through the forest like a snake, curving and bending along the banks of the river.
Most of his works are murals. The murals themes are based on hard working people and their environments.
Most of his works are murals. The murals' themes are based on hard working people and their environments.
Snowflakes form from tiny water droplets following a specific process of chemical bonding as they freeze.
Snowflakes form from tiny water droplets, following a specific process of chemical bonding as they freeze.
The downward edge of the snowflake encounters more wind resistance. The pressure from the wind causes bonds to form QUICKEST or MORE QUICKLY at this edge than in the rest of the snowflake.
MORE QUICKLY
This complaint is different [than, from, of, then] the others.
from
Bicyclists streak past in a blur of color and a cloud of dust I don't understand why they are in a hurry.
Bicyclists streak past in a blur of color and a cloud of dust; I don't understand why they are in a hurry.
or
Bicyclists streak past in a blur of color and a cloud of dust. I don't understand why they are in a hurry.
Rivera did a painting for the Madrid Museum of Art, and its called "Night Scene in Avila."
Rivera did a painting for the Madrid Museum of Art, and it's called "Night Scene in Avila."
By re-creating snowflake formations a discovery has revealed to scientists Kenneth Libbrecht and Hannah Arnold that cause of this apparent variation.
By re-creating snowflake formations, a discovery has revealed to scientists Kenneth Libbrecht and Hannah Arnold that cause of this apparent variation.
The snowflake grows outward into MORE COMPLEX or COMPLEXER hexagonal arrangements.
MORE COMPLEX
He took it [up on; upon; on] himself to schedule a meeting about store policy.
upon
The cyclists can go fast but I want to ride slowly and enjoy the fresh air.
The cyclists can go fast, but I want to ride slowly and enjoy the fresh air.
In the 1930s, he was commissioned by the Ford Motor Company to paint for the Detroit Institute of Art.
No Change
Although these snowflakes appear to have a triangular shape they actually have a hexagonal pattern.
Although these snowflakes appear to have a triangular shape, they actually have a hexagonal pattern.
Each scientist had evidence to help prove THEY'RE or HIS OR HER theory correct.
his or her
Carlos telephoned Iris to tell her that he would be late for [there, their, or they're] meeting with the staff members of the store.
their
My goal was to accomplish this incredible feat walking 20 miles a week or about three miles per day.
My goal was to accomplish this incredible feat: walking 20 miles a week or about three miles per day.
Riveras art can be found all around the world.
Rivera's art can be found all around the world.