Q: What is the tissue beneath a mollusks' shell called? Choices: - cartilage - skin - mucous - mantle A:
mantle

Q: Food is chemical energy stored in what? Choices: - typical molecules - oxygen molecules - DNA molecules - organic molecules A:
organic molecules

Q: Q: Not getting enough calcium may cause what health problem? Choices: - blindness - arthritis - diabetes - osteoporosis A:
A: osteoporosis

Question: Q: Why do birds need a light-weight body? Choices: - for cooling - water flotation - food shortages - to stay aloft A:
Answer: to stay aloft

*Question*
Q: What is the most abundant living thing on earth that can be found in almost any environment? Choices: - pests - viruses - pathogens - bacteria A:
**Answer**
bacteria

(Q).
Q: Millipedes and centipedes are the most commonly found examples of what group of arthropods? Choices: - unicellular myriapoda - Disperse Myriapoda - protists myriapoda - subphylum myriapoda A:
(A).
subphylum myriapoda