Whats the difference between primary and secondary barriers?

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

What terms describes being out of water after being submerged

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome