Biology Questions and Answers
excessive change in this factor, as the
occurrence of droughts or floods, maycause significant population decline;
small climatic changes can also alter the
photosynthavailability of food in the ecosystem.esis rate and reduce the
- How do populations of
predators and prey vary in
predatism?
Whenever a predator pincreases at the first moment the preyopulation (^)
population tesecond moment the decrease onds to decrease. At af the (^)
prey population and the bigger
population dthe predator poensity ofpulatio predators causn to decrease.e
The prey population then reverts the
tendency to dgrow. ecrease and begins to
If variationsoccur in an unexpected in the size ointensityf populations
(different from the usual intensity of the
ecologicalto ecological accide interaction) fnts killing or example, duemany
prey, the prey-predator equilibrium is
disturbeharmed. The existence od and both species can f the predatorbe (^)
sometimes is fundamental for the
survival othe absence f the prey population, sinceof predatism favors the
proliferation ocases, when the excessive pf the prey and, in someroliferatio (^) n
creates a population size over the
sustenance capacityenvironmental degradation of the ecosystem,occurs and
the entire prey population is destroyed.
- What is the relationship
between environmental
resistance and the population
growth according to the biotic
potential curve and the real
population growth curve?
The difference between the real
population gindividuals x timerowth cu) and the populatiorve (number of (^) n
growth according to the biotic potential
curve of a given population environmental resistance. is a result of
- How different is the
growth according to the biotic
potential of a viral population
from the growth according to
the biotic potential of a
bacterial population?
The growth curve according to the biotic
potential of virus apresent a positive exponential pattern.nd bacteria both (^)
The difference between them is that in
each time ppopulation weriod bacteriahile the viral po double theirpulation
multiplies dozens or hundreds of times.
The viral population has more intense growth. Tgrowth his happenscurve thus (^)
because division, each cell generating twobacteria reproduce by binary
daughter cells, while each virus
replicateshundreds of new virus generating des.ozens or even
- What are age pyramids?
Age pyramids arrepresentations in e graphicalform of superposed (^)
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