Q: What explains why two different species cannot occupy the same niche in the same place for very long? Choices: - evolution - natural selection - survival exclusion princple - competive exclusion princple A:
competive exclusion princple

Q: The skeleton of lampreys is made of what? Choices: - ligament - collagen - chitin - cartilage A:
cartilage

Q: Q: The lungs of mammals are unique in having what? Choices: - alveolar - glands - acini - alveoli A:
A: alveoli

Question: Q: Felsic, intermediate, mafic, and ultramafic are types of composition of what rock group? Choices: - Sedimentary - asteroids - metamorphic - igneous A:
Answer: igneous

*Question*
Q: What is the name of a branch of the chemistry that deals with the interconversion of chemical energy and electrical energy? Choices: - Inorganic chemistry - Biochemistry - Theoretical Chemistry - electrochemistry A:
**Answer**
electrochemistry

Q: Q: What is the method of reproduction for echinoderms? Choices: - pollination - internal fertilization - fragmentation - external fertilization A:
A: external fertilization