Why do flatworms move away from light sources?
A. to avoid skin cancer
B. to avoid the mutagenic effects of direct
sunlight
C. to hide from predators
D. their prey are always found in dark
environments
C
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The age structure diagram for rapidly growing populations:
a. is in the form of an hour glass, with large young and old populations b. is characterized by a large percentage of the population in the postreproductive years c. has a small base showing a reduced number of young d. has about equal distribution between all age groups e. is in the form of a pyramid and has a very broad base showing a large number of young
Explain an impact of human development on the water cycle
What will be an ideal response?
After the discovery of T. aquaticus, biologists found
forms of life adapted to extraordinary levels of a. acidity. b. alkalinity. c. salinity. d. pressure. e. all of these.
All sensory signals, except those from the olfactory system, are transmitted though the central nervous system and are routed to the and to the appropriate region of the cortex.
a. Thalamus b. Medulla c. Pons d. Hypothalamus