In what trimester does the baby's skin become smoother as fat is deposited under the skin?
What will be an ideal response?
Third Trimester
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Based on his experiences while aboard the H.M.S. Beagle, Darwin realized that ____ provided the only plausible
explanation for his observations.
a. descent with modification b. a metaphysical perfecting principle c. the principle of use and disuse d. catastrophes in ancient environments e. inheritance of acquired characteristics
Giardia lamblia forms resistant ____ that can survive in water contaminated with feces
a. endospores b. exospores c. cysts d. sporangia e. trophozoites
It is often said that development is a two-step process. Which two steps are likely to be referred to here?
What will be an ideal response?
Why can't amphibians be entirely terrestrial?
A) Their limbs are not adapted to support their bodies on land. B) They have a three-chambered heart that is not efficient enough for terrestrial life. C) Their digestion is adapted for consuming aquatic prey. D) Their reproduction requires water to allow fertilization and keep eggs moist. E) They do not have lungs but instead have gills that require water for gas exchange.