Two students design an experiment to see if pushing or pulling is more effective. They set up a 10 foot course. The first student pushes a heavy book down the course and the other times how long it takes. The students then switch roles and the second student
pulls the box back along the same course as the first student times. They repeat this 5 times. Describe the quality of the design of
this experiment.
A)
This is a well designed experiment.
B)
This is not well designed because 10 feet is too long.
C)
This is not well designed because they should not switch roles.
D)
This is not well designed because they should repeat it 5 times.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

answer: c

explanation:

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.