Which of the following is true of stem cells?
A) They can only become B cells.
B) They can only become T cells.
C) They can become either B cells or T cells.
D) They are not involved in the production of lymphocytes.
C
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What happens when the earthquake wave period equals the natural period of vibration of a building or
other structure? What will be an ideal response?
The symbiotic dinoflagellates that live in the tissues of coral polyps ____.?
A) ?provide carbon dioxide and phosphates for the polyps B) ?feed on the tissues of the polyps and are dangerous parasites C) ?are the main cause of coral bleaching, and are threatening the reefs of the world D) ?provide additional nourishment and oxygen to the polyps through photosynthesi
Why does soil erosion occur?
A. poor farming practices B. deforestation C. construction D. All of these choices are correct.
The surveying system for settlers, the prohibition of slavery, the establishment of a territorial government, as well as the minimum population required for states to be admitted to the Union for the Great Lakes / Corn Belt region, can be found in
the ________ which was drafted in 1785, and passed in 1787. Fill in the blank(s) with correct word