Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development. In one strategy, the female retains the young which develop and obtain nourishment from the female's blood. What is this called?
A. oviparity
B. ovoviviparity
C. viviparity
D. protogyny
E. protandry
C. viviparity
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What hormone is most involved in labor?
a. estrogen b. prolactin c. oxytocin d. prostaglandin e. progesterone
Charles Darwin wrote that members of the phylum ________ are particularly important for agriculture because they mix and aerate soil
A) Annelida B) Cnidaria C) Nematoda D) Arthropoda E) Platyhelminthes
According to the __________, the universe formed about 13.7 billion years ago in an instant, with all matter and energy exploding outward.
Fill in the blank(s) with the appropriate word(s).
Govingee, 35 years old, has recently become lethargic, and his face feels very cool but puffy to the touch. When you take his pulse, you note that it seems abnormally low. What condition might Govingee have?
A) excess calcitonin B) accumulating aldosterone C) low thyroid hormone D) low growth hormone