Why do farmers use fertiizers and what is a limiting nutrient?

Define nitrogen fixation, what are organisms are capable of nitrogen fixation? Why do farmers rotate their crops with legumes?

Suppose that the resistance between the walls of a biological cell is 7.0 * 109 Ω. (a) What is the current when the potential difference between the walls is 80 mV? (b) If the current is composed of Na + ions (q = + e), how many such ions flow in 0.

Why do multicellular organisms need levels of organization?

Which natural polymer contains 3,000 or more glucose monomers? starch protein cellulose nucleic acid?

Where are (sea) turtles mostly hunted?

Independent assortment of chromosomes is a result of A) the random and independent way in which each pair of homologous chromosomes lines up at the metaphase plate during meiosis I. B) the random nature of the fertilization of ova by sperm.

A carrier is a person who has

How does the structure of DNA determine the structure of proteins?

Which sentence correctly compares two solutions that differ by one unit of pH? O A. The acidity of the two solutions cannot be compared using the pH scale. O B. The acidity of the two solutions is the same. C.

Summarize what goes into each photosystem and what comes out of each photosystem; where do these products go?