We use the Present Perfect to say that an action happened at an unspecified time before now. The exact time is not important. You CANNOT use the Present Perfect with specific time expressions such as: yesterday, one year ago, last week, when I was a child, when I lived in Japan, at that moment, that day, one day, etc. We CAN use the Present Perfect with unspecific expressions such as: ever, never, once, many times, several times, before, so far, already, yet, etc.
Examples:
I have seen that movie twenty times.
I think I have met him once before.
There have been many earthquakes in California.
People have traveled to the Moon.
What is the question to this?
The real biological terms are
Polysaccharides for starch
and
<span>Monosaccharides for "sugar"
NOTE table sugar is considered a </span><span>Disaccharides</span>
Answer:
the answer is SO i verified it
Explanation:
i verified it from southeast.ac.th
