Which of the following statements about human society and limiting factors is true?
a.
modifications made to the environment to reduce the impact of limiting factors can cause disruption to the natural balance of an ecosystem.
b.
humans cannot modify their environment to adapt it to their needs.
c.
humans can completely overcome the factors that limit population size.
d.
limiting factors are of no concern to human society, because they do not affect human populations.

a.Modifications made to the environment to reduce the impact of limiting factors can cause disruption to the natural balance of an ecosystem is true.

Limiting factors are those factors which limits or reduces the distribution, abundance of an organism or organisms in an ecosystem.  A human society can be affected by limiting factor like resources (food, water and shelter). A human population is capable of modifying the affect of these limiting factors. They can acquire land by clearing up natural vegetation (deforestation) which will result in loss of biodiversity from an ecosystem. Therefore, this can be concluded that human can modify their environment to reduce the impact of limiting factors and can cause disruption to the natural balance of an ecosystem.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

answer; atp and nadph;