5. What is the major difference between ectotherms and endotherms?
A, Whether or not the animal builds a nest on land.
B, whether or not the animal has been found on several continents
C, whether or not the animal maintains a constant body temperature***
D, whether or not the animal is classified as a vertebrate.
Help.
Plzzzzzzzzzzz help I may have more questions!
That's correct.
OK, then there's this one...
2. According to the continental drift theroy, which of the following land regions should show the greatest similarities in fossil types?
A. East coast of South America and west coast of Africa
B. East coast of Africa and west coast of South America
C. Northern coast of south america and southern coast of Eurasia
D. Northern coast of Africa and southern coast of south america
I think it's East coast South American and West coast Africa..
Which abiotic factor is essential to all aquatic ecosystems excpet the ocean hydrothermal vents, and why?
a. phytoplankton, because it provides a source of food
b. salt, because it provides the necessary enviroment for organisms to move about
d. Sunlight, because it provides a source of energy***