__________ lengthen stems, break dormancy in
seeds and buds, and stimulate flowering. Fill in the blank(s) with the appropriate word(s).
Answer: Gibberellins
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Finally, you take a tree and block the ants from the canopy. Then you spend three years counting the number and types of insects on the forest floor around this tree (tree A) and in the area around a tree in which ants are not blocked (tree B)
You find that the area around tree A has 25% fewer ants and 40% more beetles than the area around tree B. These data support the hypothesis that: A. there is no relationship between ant abundance and beetle abundance. B. there is a positive relationship between ant abundance and beetle abundance. C. there is a negative relationship between ant abundance and beetle abundance. D. ecological interactions in the tree canopy have no effect on forest floor communities. E. ecological interactions in the tree canopy always have a negative effect on forest floor communities.
Given what you now know, what information is most likely to produce the correct answer?
What will be an ideal response?
What are the specific environmental consequences of a phytoplankton bloom?
a. An increase in phytoplankton acidifies ocean water. b. Phytoplankton are decomposed by aerobic bacteria, which depletes the surrounding water of oxygen. c. Phytoplankton fix nitrogen in the water causing nitrification. d. Phytoplankton are decomposed by anaerobic bacteria which enriches the surrounding water with oxygen. e. Phytoplankton use up hydrogen ions, which decreases the acidity of the surrounding water.
The concentration of CO2 in the atmosphere is lower than its concentration in the oceans
Indicate whether the statement is true or false