squeezing of uterus during birth
What will be an ideal response?
Contraction
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Which of the following are examples of adaptations that do not result from living at high altitudes?
a. elevated erythrocyte count b. increased number of alveoli c. increased number of lung capillaries d. hemoglobin molecules with greater affinity for O2 e. decreased erythrocyte count
Darwin was very interested in why animals on distant and isolated landmasses appear related to animals on the mainlands, yet were very distinct. Which of the following types of evidence would help Darwin make sense of his observations?
A. biochemical B. biogeographical C. fossil D. anatomical
Which of the following animals have the highest O2 consumption per gram ever recorded for animals?
a. aquatic animals b. insects at rest c. insects at flight d. birds at flight
Neural crest cells at the dorsal surface of the neural tube
A. form the notochord. B. differentiate into the brain. C. form the overlying ectoderm. D. migrate to many different regions of the body. E. control the segmentation of somatic mesoderm.