Examlex
The sinoatrial node controls the heart beat.
Sahel Region
A semi-arid region of Africa that stretches from the Atlantic Ocean to the Red Sea, lying between the Sahara Desert to the north and the Sudanian Savanna to the south.
Spotted Owl
A species of owl known for its distinctive spots, native to the forests of North America, and often cited in discussions of conservation and forestry management.
Endangered
A status signifying that a species is in danger of extinction throughout all or a significant portion of its range.
Chlorofluorocarbon
A class of compounds used in refrigerants and aerosols, known for their role in ozone depletion.
Q13: Amniotic eggs evolved as a means to:<br>A)protect
Q17: _ consist of a core of segments
Q19: Specialized parenchyma cells,known as _ cells,occur along
Q21: Describe the various scientific roles that zoos
Q21: Unlike other blood cells,certain types of _
Q29: Which is incorrect about anthropoids?<br>A)They evolved after
Q29: The monthly cycle of a human female
Q30: What happened between 10 and 5 million
Q40: Heartworm infection in dogs and cats are
Q44: Evolution of a body cavity is important