Fire coral are a member of the class
a. Anthozoa.
b. Hydrozoa.
c. Scyphozoa.
d. Cubozoa.
B
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The oldest fossil remains of Homo sapiens found so far date from about _____
A) 6 million years ago B) 1.6 million years ago C) 195,000 years ago D) 60,000 years ago E) 16,000 years ago
As trees get larger and the number of leaves increase, transpiration rates rise and demand for water increases. How do plant tissues meet this demand for water?
A. Cells of the xylem continue to divide and produce more cells that transport water. B. Vascular cambium continues to divide, and cells of its inner surface differentiate to form additional secondary xylem cells. C. Cells of secondary phloem adjacent to the vascular cambium differentiate into xylem cells. D. Cells present in the pith closest to the xylem differentiate into xylem cells.
List two characteristics that have contributed to the biological success of the insects, and briefly
explain the adaptive value of each characteristic that you identified. What will be an ideal response?
What is an area of the Earth's surface currently undergoing primary succession?
A. Shallow seas with low productivity B. Volcanoes in Iceland C. Redwood forests along the northwestern U.S. coast D. Old orange groves in Florida