Which of the following communities could exhibit apparent competition?
A) species that share a predator but not resources
B) species the share resources but not a predator
C) species that do not share either resources or a predator
D) species with diffuse interactions
A
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Marfan syndrome can be caused by mutations in either of two genes involved in the disorder, but mutations in one of the genes blocks activity of the other. This means that Marfan syndrome demonstrates
A) variable expressivity and complete penetrance. B) an acquired phenotype. C) late onset and early onset. D) genetic heterogeneity and epistasis.
Define the term "evaporite"
What will be an ideal response?
Which of the following prokaryotic nutritional
groups use organic substances for both carbon and energy? a. photoautotrophs b. chemoautotrophs c. photoheterotrophs d. chemoheterotrophs e. none of these
The pressure exerted on the inner walls of the arteries when the heart relaxes between beats is the ____ pressure
a. systolic b. diastolic c. barometric d. residual