Answer:
what is the question?
Explanation:
do you need something translated?
number of different pairs the teacher can choose= nCr (18+14, 2)=496
no. of opposite gender pairs possible= 14 (since there are only 14 boys)
probability = 14/496= 7/248
Answer;
Evaporation is when water vapor comes from liquid surface water, such as streams, lakes, rivers, and oceans. ... Transpiration is when water vapor comes from liquid water excreted by plants. Plants 'breathe' by exchanging carbon dioxide for oxygen through small openings in their leaves called stomata during photosynthesis.
