In salt marshes, predatory fish move in when
A) the tide is high.
B) migratory fishes are spawning.
C) the sun goes down.
D) salinity is low.
A
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Genetic studies have identified an allele (32) that seems to provide protection against AIDS. Which of the following would most likely explain the reason why our population has this mutation?
A. Our bodies are designed to protect us against a myriad of pathogens. Our immune system was preparing for future viruses. B. This mutation likely benefited the human population against some other early pathogen. C. This mutation was initially harmful, but it now affords us protection against AIDS. D. Mutations that become prominent in a population initially were neutral but then become advantageous later on.
Strobili are:
a. flowers b. spore forming, cone shaped structures with modified leaves c. clusters of spore producing capsules d. accessory leaf-like structures e. stems that grows horizontally, underground
The host species in which a parasite becomes an adult and reaches maturity is referred to as a(n) ________ host
Fill in the blank(s) with correct word
The use of compartmentation for the simultaneous but independent regulation of anabolic and catabolic pathways occurs generally in eukaryotes but not in prokaryotes.
Answer the following statement true (T) or false (F)