Will give what does it mean that nikoleta is in the 10th percentile for both length and weight? is that a desirable statistic if she was in the 50th percentile at birth

90% of people weigh more than Nikoleta and weigh 10%less

Not necessarily desirable - she was born at 50% percentile which means she is in the middle (or average) so average height and weight

10% percentile just means that she is the top 10% for height and weight, so she is tall, but weighs more.

However, the ratio of height to weight is the same, so she just grew more height and weight wise.

There would be no evaporation so no water cycle