The slight negative charge at one end of one water molecule is attracted to the slight positive charge of another water molecule. what is this attraction called?

a a hydrogen bond

b a covalent bond

c an ionic bond

d a hydrophilic bond

Environmental differences within ecosystems are generally caused by

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

What do nitrifying bacteria convert