Rock can melt at a depth of about

below Earth's surface.

O A. 100 km

O B. 50 m

O C. 500 km

O D. 2000 km

Which one is the best description of a chemical reaction? a. mixing two substances b. the combustion of a substance c. forming or breaking bonds d. the decomposition of particles

Which of the following IS NOT a reason why organisms in an estuary have special adaptations? a. exposed to intense sunlight during the day b. salinity of the water in an estuary is constantly changing c.

Pancreatic β cells release insulin from intracellular vesicles. This release is regulated in part by the activity of glucokinase. How would insulin release be affected if pancreatic β cells were mutated to express hexokinase rather than glucokinase?

Percussion instruments are musical instruments that make noise when they are hit with an object. Which of these are percussion instruments? Check all that apply.

Which of the following is NOT an example of physical weathering? Wind blowing and eroding sandstone Acid rain dissolving limestone Ocean waves crashing against basalt A river carving out a canyon through bedrock

Which of these is considered to be the "king" of the social sciences Geography Economics Sociology Political science

How much time have organisms had to change?

Which winds are usually warmer and more humid? Winds blowing from the north Winds blowing from the south Winds moving from the land Winds moving toward the ocean

Phylogeny refers to a. the evolutionary history of a group of related organisms. b. a group of organisms that includes an ancestor and all of its descendants. c. Darwin's method to classify organisms. d. all of the above

Vertebrae protect the cerebellum. true or false