Today, there are over 270,000 plant species with conductive tissues and material flow systems known as
A) vascular plants. B) xeriphytes. C) blue-green algae. D) cyanobacteria.
A
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The Atlantic continental margin is presently a(n) ____________________ margin. What will be an ideal response?
As successional changes occur in an ecosystem, new species take advantage of new conditions. Where do these new species come from?
A) They evolve from other species in the immediate region. B) They come from surrounding ecosystems in other stages of succession. C) They are planted by forest rangers who are managing these forest ecosystems. D) The seeds of the new species are carried in by large streams and rivers.
A 500 sheet ream of copy paper has thickness of 2.25 in. What is the average thickness of each sheet in mm?
What will be an ideal response?
A cartel is an agreement among producers that seeks to artificially increase prices by arbitrarily raising them
Indicate whether the statement is true or false