The greatest amount of kinetic energy is found in
A. gases.
B. liquids.
C. solids.
D. colloids.
A. gases.
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Which of the following plant adaptations is shared by seedless vascular plants, gymnosperms and angiosperms?
A. Seeds B. Flowers C. Vascular tissue D. Seedless vascular plants, gymnosperms and angiosperms do not share any plant adaptations.
If a small region of a chromosome containing a non-essential gene is completely deleted, and an organism has two identical chromosomes with this deletion, then the organism
A) has no alleles of that gene. B) is dead. C) has more heterochromatin. D) has recessive alleles of those genes. E) will exhibit pseudodominance.
An air environment, gravity, and desiccation are three challenges that were addressed in the evolution of reptiles. What three evolutionary innovations addressed these challenges?
a. Gills, bony skeleton, and lungs b. The amniotic egg, sturdy fins, and a cartilaginous skeleton c. Dorsal nerve cord, notochord, and a post-anal tail d. . Better limb support, gills, and pharyngeal slits e. Lungs, better limb support, and the amniotic egg
Direction of shell coiling in the snail Lymnaea peregra is conditioned by a form of extrachromosomal inheritance known as ________
A) independent assortment B) sex-linked inheritance C) maternal effect D) heteroplasmy E) epistasis