Questions by Zhenglei

Questions by Zhenglei

What is the relationship between groundwater and caves?

asked Sep 1, 2017

1 answer

0 votes

75.0k views

Janet is three years older than her sister Julie Janet's brother is eight years younger than her sister Julie the sum of their ages is 55 years

asked Jul 27, 2017

2 answers

1 vote

120k views

This black dog has the genotype of BB for fur color. The black dog mates and has puppies with a solid white dog. The white dog has the genotype bb. What is the probability that this match will produce

asked Jan 10, 2017

2 answers

0 votes

150k views

Who played the most important role in exploring the Americas?

asked May 7, 2016

2 answers

2 votes

104k views

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