2 Points
A biologist began studying a population of bullfrogs. In 1998,
she found that most of the male frogs croaked, but some did
not. A bat species known to prey on male frogs migrated to
the area in 2005. The biologist returned to the area in 2008
and repeated population counts of male frogs. The table
shows her data.
1998
2002
2004
2008
Number of
noncroaking males
244
368
298
1086
Number of croaking
males
742
1165
791
305
What factor most likely caused the noncroaking male
population to increase after 2004?
O
A. Learning to avoid the new predator
O
B. Adaptation of the croakers in the presence of a new predator
O
C. Extinction of the croakers because of the new predator
O
D. Selective pressure in the form of a new predator
SUBMIT

the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more time.

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.