If you are using a screwdriver to pry open a paint can, you are using what type of simple machine?
question 1 options:
pulley
lever
screw
wheel and axle what is done whenever a force moves an object through a distance?
question 2 options:
force
load
energy
work
what simple machines would move or turn an object?
question 3 options:
wheel and axle
lever
screw
wedge a see-saw is an example of what type of lever?
question 4 options:
first class
second class
third class
fourth class a ramp is an example of an inclined plane. a man in a wheelchair was trying to get up the ramp, but he was having trouble because it was too steep. what can you do to make the ramp more useful?
question 5 options:
shorten the ramp
decrease the height of the ramp
remove the ramp and put in stairs
lengthen the ramp

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.