One key principle of natural selection is that there is competition for resources
A. true
B. false
A
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Predators of Daphnia emit chemicals into the water that cause Daphnia to ________
a. develop pointed heads b. spend more time in hiding c. produce toxins d. reproduce at an earlier stage of development
Many introduced species have deleterious effects on
communities and ecosystems because a. coevolved parasites and competitors are absent. b. the introduced species are long-lived. c. predators prefer the introduced species; therefore, the local prey proliferate to dangerously high levels. d. the communities from which they came lost an important predator, competitor, or parasite. e. all of these occur.
Impairments of the kidney that are considered short term and possibly can be overcome by medication or other treatments are called chronic renal failure
Indicate whether the statement is true or false
All the offspring of a cross between a black-eyed MendAlien and an orange-eyed MendAlien have black eyes. This means that the allele for black eyes is ________ the allele for orange eyes.
A) codominant to B) recessive to C) more aggressive than D) dominant to E) better than