Briefly state the problems that animals faced in their adaptation to land. What will be an ideal response?
Because animals evolved in a moist environment, they had to adapt to the drying effects of the
atmosphere, so they had to develop an outer skin covering for protection. They also had to develop a
means to extract oxygen from the atmosphere rather than from water. Because animals need mobility
to find food, they also had to develop a means of locomotion, and a skeletal structure for support
against gravity. Finally, their reproductive system had to combat the problems of desiccation of
unprotected eggs
You might also like to view...
Which of the following are solar energy technologies?
A. solar cookers, passive solar heating systems, and translucent solar film B. solar cookers, photovoltaic cells, and active solar heating systems C. translucent solar film, solar cookers, and power towers D. photovoltaic cells, active solar heating systems, and reactive electrosolar systems E. reactive electrosolar systems, solar cookers, and passive solar heating systems
Under the law called REACH, who is responsible for determining if a chemical is safe?
A. the manufacturer B. the public C. public sector scientists D. the government
Many invertebrate animals, such as oysters, snails, clams, and barnacles, are examples of preserved by ________, and they bury themselves when alive.
A. replaced by minerals B. rapid burial C. hard parts D. sap (amber)
Currently, the world energy consumption of renewable energy is CLOSEST to ________ percent
A) 0 B) 5 C) 20 D) 40 E) 60