Both aquatic and terrestrial organisms must have ____ across which gas exchange can take place
a. a respiratory system
b. tracheal tubes
c. gills and lungs
d. stratified squamous epithelial tissue
e. a moist surface
e
Biology & Microbiology
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Define and give examples of several vestigial structures
What will be an ideal response?
Biology & Microbiology
What kind of fruit is formed from fused ovaries of several individually pollinated flowers?
a. aggregate b. simple c. multiple d. accessory e. berries
Biology & Microbiology
When a muscle cell contracts, what type of work is being powered by ATP?
A) chemical B) transport C) mechanical D) potential
Biology & Microbiology
Radioactive decay can be used to measure which of the following?
A. Chemical bonding B. Time C. Moisture D. Pressure E. Temperature
Biology & Microbiology