Some technologies have a number of negative effects. which is a negative outcome of the technology of pesticides a-increased food supply b-harmful to humans if used improperly c-cheaper food d-creation of more jobs

Option B-harmful to humans if used improperly

Explanation:

Most of the technologies have done more harm as compared to the good. Use of pesticides is an example of a technology, which initially boosted the crop production and then started creating negative health impacts due to its excessive usage.

Now a day, lot of farm produce especially the fruits and vegetables have harmful chemicals residing on the outer skin of edibles. Also the pesticides have reduce the fertility of soil thereby lowering the total produce.

Hence, option B is correct

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.  

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.