With injury, illness, anxiety, or starvation
a. cortisol levels in the blood increase
dramatically.
b. the adrenal medulla releases norepinephrine
and epinephrine.
c. the respiratory rate increases.
d. the fight or flight response is activated.
e. all of these occur
E
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Two main symbionts of termites are ________ and ________
A) archaea / bacteria B) bacteria / fungi C) bacteria / protists D) fungi / protists
Animals tend to feed on prey that maximize their net energy intake. This is called the __________ theory.
A. competitive exclusion B. maximal consumption C. optimal foraging D. optimization
Interspecific competition involves individuals of two or more species vying for the same limited ________
Fill in the blank(s) with correct word
An organism that lacks a nucleus is called a(n):
A. Prokaryote B. Eukaryote