til. yoves. photo
7. three funnels contain starch solutions with different concent.
nut for 24 hours in a container containing starch solution with
th different concentrations, where they are
arch solution with unknown concentration,
a semi-permeable membrane. by usnig the
following figures:
tap
svarer
star starch
solution solution
(29) (45)
(1)
(2)
at the beginning
after 24 hours
(b)
the
(a) what is the concentration of the solution inside the container. explain your answer.
(b) explain the change occuring in the two funnels no.(1) and (3).

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.