Protists are mostly unicellular (one-celled) eukaryotes. A few protists are multicellular (many-celled) and surprisingly large. For example, kelp is a multicellular protist that can grow to be over 100-meters long
Answer:
1. I cannot remember well, but I am sure I <em>have been</em> here for more than ten years.
The past participle of be is been.
2. Sitara was only three months old when her parents <em>relocated</em> to New York.
The past participle of relocate is relocated.
3. By the time they decided to return to India, she <em>became</em> old enough to make her own decisions.
The past tense of become is became.
D. With caution against ill use, science can give us great knowledge and progress.
A.Communism poses a threat to freedom and to democracy.
Because the rise Communism threat at the time.
