In which type of environment are plants most likely to use a c4 pathway of carbon fixation
a) cold and wet
b) cold and dry
c) hot and wet
d) hot and dry

D) hot and dry. C4 pathway of carbon fixation is used by plants as an adaptive mechanism to prevent or reduce water loss during hot weather condition. In carbon fixation, C4 is not an alternative pathway but an additional one.

B.) nitrogen fixationnitrogen fixation is the process of nitrogen molecules seeping into the soil and inside plant roots and bacteria. it gives more "life" to plants