The lengths of a sample of tiger canines were measured. 68% of the lengths fell within a range between 15 mm and 45 mm. The mean was 30 mm. What is the standard deviation of this sample?

A. 5 mm

B. 15 mm

C. 7.5 mm

D. 30 mm

A straight hairline occurs when a person has two recessive alleles for it. how are these alleles arranged?

Which of these is a disadvantage of hydroelectric energy? A. Is expensive to build or maintain B. Has high power plant efficiency C. Has a long power plant life span D. Reduces greenhouse gas emissions

Which side of the mountain receives more precipitation

Explain how DNA replication differs in prokaryotic and eukaryotic cells?

What are the genotypes of these flies? a. white eyed, male b. red eyed female (heterozygous). c. white eyed, female d. red eyed, male

Damon is an oceanographer. He wants to check the possibility of the next impending hurricane across the east coast of the United States. What should he do? A. check the salinity of seawater B. check the density of seawater C.

Which statement describes the reaction for cellular respiration? The equation is carbon dioxide + water → glucose + oxygen + water and energy is required in the form of light O The equation is glucose + oxygen carbon dioxide + water and energy is

When is energy needed to move substances across the cell membrane

Which term describes the highest pressure against the walls of the blood vessels?

How might more than one agent of physical weathering operate in the same place