You give up on the garden and ignore it for a third summer. You notice that two small birch trees sprout and begin to grow among the sunflowers
The birch trees are slower growers
than the sunflowers, but by the fifth summer they start to shade the sunflowers. The birch
trees and the sunflowers are in competition for:
A. water.
B. light.
C. nutrients.
D. All of the responses are correct.
E. None of the responses is correct because
competition only occurs between members of
the same species.
D
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A new DNA strand elongates only in the to direction because _____
A) DNA polymerase begins adding nucleotides at the end of the template B) the polarity of the DNA molecule prevents addition of nucleotides at the end C) replication must progress toward the replication fork D) DNA polymerase can add nucleotides only to the free end
Our species is called Homo sapiens. The first word refers to which taxonomical grouping?
A. Kingdom. B. Phylum. C. Order. D. Genus. E. Species.
Explain how dicer and RISC are involved in the production and function of miRNAs
What will be an ideal response?
Which event will not occur during the fall overturn? a. There is a brief burst of primary production
b. Nutrient rich water moves upward. c. Nutrients come to the surface of the water. d. Oxygen rich water will move upwards. e. The thermocline disappears.