definition: the loss of topsoil so that productive land becomes a desert
what is the word the hint is the first two letters are de

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

There are two tomato plantlets one of them is kept in an oxygen chamber with a light source and another is kept in sunlight. both of them are watered regularly what will be the observation after two weeks