What role is not associated with coastal wetlands?
a. They remove food from offshore communities
b. They act as a nursery to commercial fish.
c. They act as a buffer during floods.
d. They suppress impacts of tsunamis.
a
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The increased mortality of coniferous trees in the Pacific Northwest between 1955 and 2007 is an example of a
reaction to ____.
a. density-independent factors b. density-dependent factors c. predation d. crowding e. population growth
How are the extending forelimbs and hind limbs alike?
What will be an ideal response?
What hypothesis did Luis and Walter Alvarez test in relation to the mass extinction of dinosaurs 65 million years ago (MYA)?
A) The mass extinction 65 MYA was caused by a surge of catastrophic cyclones. B) The mass extinction 65 MYA was caused by a slow but steady increase in climate temperatures. C) The mass extinction 65 MYA was caused by an impact of an extraterrestrial object. D) The mass extinction 65 MYA was caused by the loss of preferred plants for food.
Choose the description below that best matches the current model of RNA polymerase holoenzyme.
A. A core enzyme composed of five polypeptides bound by ribosomes. B. A core enzyme composed of five polypeptides bound by a transcription factor. C. A core enzyme composed of five sigma factors bound by a polypeptide chain. D. An open complex or "bubble" formed by DNA, mRNA, and RNA polymerase.