Do they have a cause and effect upon one another?

He has had his eyes upon me for a long time.

Just what effect has the drug had upon your system?

He had a look at the thing upon the bed.

The effect your race has had upon the rest of us.

Each of these may have some effect upon the child, or none.

Thus the change will have no impact upon the community.

Indeed we seem to have a difficult problem upon our hands.

She knew what effect this kind of talk had upon him.

Have you not yet bit full upon that truth, girl?