What is the most likely explanation for the Florida panthers’ poor health?
A. The panthers are unable to find food, so they are starving to death.
B. Environmental pollutants are poisoning the panthers.
C. The panthers are inbreeding, so recessive genetic mutations are becoming common.
D. The panthers are forced to live in close proximity to each other, causing a prevalence of communicable disease.
E. Environmental pollutants are causing genetic mutations in their DNA.
C. The panthers are inbreeding, so recessive genetic mutations are becoming common.
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What is the most efficient way to regulate gene expression from the perspective of cellular resources? What will be an ideal response?
Consider the aquatic insects pictured in the accompanying figure. Which characteristic of water molecules directly
contributes to their remarkable "water walking" success?
a. ionic bonds
b. capillary action
c. hydrogen bonds
d. adhesive forces
e. nonpolar covalent bonds
Members of which phylum are called acorn worms?
a. Hemichordata b. Echinodermata c. Arthropoda d. Cnidaria
A person hears a sound coming from a hole in the ground. Sometime later a groundhog is seen emerging from the hole in the ground. The person suspects that the sounds were made by the groundhog since they have witnessed this behavior before. The underlined portion of this story is best described as a(n)
A. experiment. B. hypothesis. C. observation. D. test of a hypothesis.