What kinds of plant species are likely to be pioneers in secondary succession? Explain why
What will be an ideal response?
Fast-growing annual weeds are likely to be pioneer species because they grow well in direct sunlight, their seeds are already present, and they are able to root in the soil that is already present.
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Which of the following statements best explains why there are fewer colonies on plate IV than on plate III?
(A) Plate IV is the positive control. (B) Not all E. coli cells are successfully transformed. (C) The bacteria on plate III did not mutate. (D) The plasmid inhibits E. coli growth.
In open-water marine ecosystems, the ________ occupy the same trophic level as the giant sequoias (redwoods) in the forests of California
A) fast-swimming, fish-eating tuna B) giant, squid-eating whales C) microscopic bacteria that decompose all the other organisms once they have died D) tiny, multicellular zooplankton ("animal drifters") that feed on phytoplankton E) microscopic, single-celled algae (protists) called phytoplankton ("plant-like drifters")
Compare the way most oxygen is carried in the blood with the way most carbon dioxide is carried
What will be an ideal response?
The regulatory systems of the animal body maintain a relatively stable internal condition through a process called ________.
A. countercurrent exchange B. equilibrium C. homeostasis D. osmoreception E. absorption