RIFAs are a(n) ____ species
a. host
b. parasitic
c. pioneer
d. keystone
e. exotic
ANSWER: e
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The siphuncle of nautiloids is used for:
a. regulating respiration rate. b. providing propulsion. c. regulating water and gas content within the chambers. d. capturing food. e. reproduction
Capillary walls consist of ____
a. stratified squamous epithelium b. simple squamous epithelium c. simple cuboidal epithelium d. stratified cuboidal epithelium e. simple columnar epithelium
In oceans, how does the vertical movement of cold water affect surface organisms?
A) by bringing nutrient-rich water to the surface B) by bringing oxygen-rich water to the surface C) by bringing waste down to the sea floor D) by increasing productivity via warmer temperatures
Blood is pumped through what in a frog to all parts of the body?
What will be an ideal response?