Bipedal walking is more energy efficient
a. than knuckle walking.
b. than quadrupedalism.
c. when running.
d. than arboreal locomotion.

B.quadrupedalism

Explanation:

Studies today proves that bipedal locomotion evolved from quadrupedalism because it was more energy efficient.

In a research conducted by scientists

4 humans and 4 chimpanzees were made to run on a treadmill, the chimpanzees were trained to walk quadrupedally and bipedally on treadmill. When the results came out humans had used only one quarter of the energy the chimpanzees had used while knuckle walking.

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.