One hypothesis concerning the origin of the abiotic
synthesis of proteins holds that these proteins formed
on and were bound and protected by
a. oceanic stratified mica crystals.
b. clay compounds in tidal flats.
c. sediments in the oceans.
d. oceanic metal ores.
e. none of these.
Answer: b
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What mechanism is one that prevents fertilization due to reproductive times?
a. Behavioral isolation b. Anatomical isolation c. Habitat isolation d. Temporal isolation
Diagram the hydrological cycle. Include the terms evaporation, transpiration, percolation, groundwater, runoff,
condensation, and precipitation. What will be an ideal response?
. A problem with the action or production of this substance leads to both type I and type II diabetes mellitus.
A. glucagon B. growth hormone C. thyroid hormone D. insulin E. cortisol
A time lag in the response of survivorship and fecundity to a population's density can occur because ____ is usually
determined by the availability of resources at some time in the past.
a. death b. immigration c. fecundity d. competition e. population growth