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

What effect would the removal of a keystone species have on an ecological community? Write a short essay that explains this effect in terms of trophic cascade. Provide a specific example that illustrates this process.

What would happen if replication of chromosomes did not occur before cytokinesis?

What organisms will you find in deeper cooler water?

How many centimeters are in 26 meters

Which of the following has a nucleus? A.) Chloroplast B.) Bacteria C.) Yeast D.) Archaea

Which biomes contain a limnetic zone surrounded by a littoral zone? A. rivers and streams B. estuaries C. coral reefs D. ponds and lakes E. oceans

QUICK! In a developing embryo, what process allows cells of the mesoderm to give rise to muscle, bone, and heart tissues? Select one: a. cell differentiation b. cell depolarization c. cellular respiration d. cellular replication

According to the fluid mosaic model of the cell membrane, a. there are fats floating in the protein layer. b. carbohydrates function as membrane channels. c. nonpolar ends of phospholipids are exposed to water inside and outside the cell. d.

What is the actual meaning of the suffix - metry?

Jenny went to the sale at Kohl's last week. T-shirts were on sale for $15 each and hoodies were on sale for $20 each. If she spent $150 total, write an equation to represent this situation.