Discuss the development of the giant aquatic mammals. What will be an ideal response?
The aquatic mammals include the orders Sirenia and Cetacea. Paleontological information
indicates that whales developed from land-dwelling mammals that lived during the Eocene.
Whales are most closely related to the artiodactyls. The limbs adapted to paddle-like flippers.
Some of these whales developed filter-feeding apparatus called baleen.
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The majority of urban population growth in peripheral countries is due to natural increase
Indicate whether this statement is true or false.
Based on detailed fossil studies, it has been shown that the Neanderthals were smaller and lighter
than modern humans. Indicate whether the statement is true or false.
How does a greenhouse work, and why is the analogy of the earth's atmosphere to a greenhouse imperfect?
What will be an ideal response?
What evidence first indicated to scientists that the continents were once connected?
a. the apparent jigsaw-like fit of continents together, as in the case of South America and Africa b. the distribution of coal from tropical swamps of the past among North America, Europe, northern Africa, and Asia c. deformed igneous rocks in Brazil that highly resembled similar rocks in Africa d. the presence of Glossopterison fossils on five different continents e. the evidence of past isthmian links which allowed land animals to reach other landmasses across the ocean