A scientist is studying several areas along an elevation gradient. Her study involves prescribed burns (purposefully set, low-intensity fires) in the different areas, followed by a comparison of the type and abundance of organisms that colonize them over the next ten years. What scale best describes her study?
A. Physiological ecology
B. Ecosystem ecology
C. Organismal ecology
D. Community ecology
E. Population ecology
D. Community ecology
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Which of the following pigments is found exclusively in red algae?
A) chlorophyll a B) chlorophyll c C) lutein D) phycoerythrin E) ?-carotene
Radiolarians have frothy vacuoles and lipid droplets, which provide them with buoyancy in marine environments
Indicate whether the statement is true or false.
Haplogroups consist of
A) sets of species that share a recent ancestor. B) the set of Y chromosomes in a population. C) groups of SNPs that are linked on a chromosome. D) preserved gametes, which are haploid.
The parabronchi of birds are open at both ends. Indicate whether the statement is true or false