Introduction: The 19th century was the time of the Industrial Revolution in England. Most of the new industries used coal for energy, and the air was polluted with black soot. In forests near factories, the soot
coated trees and killed lichens. As a result, tree trunks became darker.
Experiment: Click Play and hunt peppered moths on dark tree trunks for five years. In each year, try to
capture as many moths as you can.
many
Why did the changes you observed in the moth populations
happen?

Select all that apply.
0)individual moths changed colors
0)the best-hidden moths survived an reproduced
0)the moths that survived passed their colors to their offspring
0)the moths became tastier to their predators

Light colored peppered moths decreases in number and dark colored peppered moths increases.

Explanation: The population of light colored peppered moths decreases whereas the dark colored peppered moths increases in number because the light colored peppered moths are visible to the predator birds  whereas the dark colored peppered moths are not visible due to dark coating of the trees so they are saved from the birds and therefore, increase in population of dark colored peppered moths occurs and decrease occur in light colored peppered moths population.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.