Hat is a population?

all the organisms in an ecosystem
a collection of all the abiotic factors in an ecosystem
a collection of all the biotic factors in an ecosystem
a group of organisms of the same kind or species

Which of the following statements regarding anfinsen's denaturing experiments with ribonuclease a (rnase a) are valid? exposing the denatured protein to air oxidation and then dialysis to remove urea restored the protein to its original functionality. removing urea by dialysis and then allowing air oxidation of the denatured protein restored the protein to its original functionality. denaturing the protein with both urea and β-mercaptoethanol yielded an inactive protein. anfinsen concluded that protein folding is determined by its primary sequence.

The tubes transporting minerals and water upward are called ?

What are the pros and cons of quadrat sampling?