What does nitrogen fixation accomplish?

O

A. It allows bacteria to use nitrogen to grow.

O

B. It allows respiration to occur.

O

C CU

C. It allows plants to use nitrogen to grow.

O

D. It allows industry to mass-produce nitrogen.

Do all cells communicate through direct contact? if not, describe two other ways that cells communicate.

What is the best metric unit for the height of a flagpole

If a male dog has 20 chromosomes in his sperm cell, how many does he have in his body cell?

Which lobe of the cerebral cortex is most directly involved in vision?

A star is not considered born until the process of nuclear fusion

Besides ridding the body of wastes formed during cell metabolism, the kidney adjusts blood chemistry in other ways. what are these three other ways?

What happens to alcohol during the cooking process A-it ferments so it is stronger B - it ferments so it is weaker C - it evaporates so it is bitter D-it evaporates so is it wear

When is speciation complete?

Darwin's observations of Galápagos finches support the theory of evolution. Molecular homology of genes, such as Hox genes, provides another type of support for how species evolve. What does this imply about scientific theories? A.

Which of the following statements about amphibians is true? A. Amphibians are represented by about 500 species of frogs, toads, and salamanders. B. Populations of amphibians in a few local areas have declined dramatically in the last few decades. C.