As populations in north america grow, so does the need for wood to build houses, stores, and other buildings. select the statement that best describes the long–term global effects of this behavior. a. people will need to plant more trees and in a few months the entire problem will be taken care of. b. if we control the amount of forests cut, the people will go somewhere else to find wood. this is not a concern as long as they are not cutting down the forests in north america. c. populations are falling in the rest of the world so the extra wood can come from other countries that have a surplus. d. in order to meet the demand, forests have been cut down at an alarming rate. if we do not find another source of building materials, our forests, an important natural resource, will all disappear.

The answer is D.

Explanation:

It can't be A, because it would be very hard to keep the amount of trees being cut down and the amount of trees being planted the same. Also, the entire problem would not be taken care of in a few months because people would have to constantly keep it up.

It can't be B, because it is a concern anywhere in the world about cutting down forests. If everyone would go somewhere else to find wood, then the forests in those areas would disappear also.

It can't be C, because populations in the rest of the world are not falling. The need for wood in those places is also rising.

It is D, because the forests have been cut down at very fast rate. Our forests will disappear if this continues.

Hope this helps! :)

ill do it for 100, also this isnt 80 its 40

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂