2) As the population continues to grow, so does the need better ways to grow food. Which of these is an example of how humans have used
technology to help wth the production of food?
A) moving to a system of smaller, less-specific farms
B)
grow the same crop in the same area year after year
genetically modified soybeans have been created to
be pest-resistant
D)
hiring more people to harvest crops instead of buying
more machinery

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

the correct answer is d

bacterium is not correct