As you saw in "DO or Die", adding nutrients to a lake has direct effects (such as stimulating the growth of phytoplankton) and indirect effects throughout the community (such as drastic effects on fish populations). Suppose you triple (3x) the phosphorus input in a lake where phosphorus is limiting, and phytoplankton populations grow dramatically. Based on your observations, which of the following predictions is most likely to follow the phytoplankton bloom?
What will be an ideal response?
Decomposition increases, dissolved oxygen decreases, and fish populations die off.
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What indicates that the lava that flowed north from SP Mountain was very fluid?
Look at the following volcanoes (note that the maps are of several different scales): • Mount Vsevidof (53°07'35"N, 168°41'16"W), a composite volcano in Alaska (shown on Map T-2, Map T-21b, and Figure 34-2) • Crater Mountain (37°52'42"N, 119°00'25"W), the highest peak of the Mono Craters, a chain of rhyolitic plug dome volcanoes in California (shown on Maps T-23a and T-23c) • SP Mountain (35°34'56"N, 111°37'55"W), a basaltic cinder cone in Arizona (shown on Maps T-22a and T-22b and Figure 34-3) • Mauna Loa (19°28'17"N, 155°35'41"W), a large shield volcano on the Big Island of Hawai‘i (shown on Maps T-1 and T-21a) What will be an ideal response?
Which of the following is not one of the UN's Millennium Development Goals?
A) End poverty and hunger. B) Achieve universal primary (elementary school) education. C) Promote gender equality and empower women. D) Combat HIV/AIDS, malaria, and other diseases. E) End wars between countries over resources.
The fish in the lake at the local park are dying. A professor from the local college comes to investigate, and first she measures the dissolved oxygen because she wants to check for the ________
A) influence of acid precipitation B) presence of heavy metals C) presence of bacteria D) possibility of eutrophication E) aquatic biodiversity
What is the IUPAC name of isobutylamine?
A) 1-methyl-1-propanamine B) 2-methyl-1-propanamine C) N-methyl-1-propanamine D) 2,2-dimethylethanamine