Starter: March 17th, 2023

The diagram shows the Mid-Atlantic Ridge viewed on a map and in a cross section. Which statement best describes the Mid-Atlantic Ridge?

• When two tectonic plates move away from each other, the size of the ocean decreases along

  the Mid-Atlantic Ridge.

• When two tectonic plates move away from each other, new ocean floor forms along the Mid-

  Atlantic Ridge.

• When two tectonic plates move toward each other, mountains form along the Mid-Atlantic

  Ridge.

• When two tectonic plates move toward each other, oceanic crust forms along the Mid-Atlantic

  Ridge.

Which table identifies a species with the greatest chance of surviving changing

environments?

• A.

• B.

• C.

• D.

How is natural selection different from artificial selection?

• Natural selection only happens in the natural environment, while artificial selection only

  happens in the laboratory environment.

• Natural selection only happens in wild organisms, while artificial selection only happens in

  organisms cared for by humans.

• Natural selection only happens for traits in a population that are inheritable, while artificial

  selection only happens for traits in a population that are not inheritable.

• Natural selection only happens when an environmental change favors traits in a population,

  while artificial selection only happens when humans choose desired traits in a population.

Which force diagram best represents an object that is moving to the right?

• 
• 
• 
• 

The diagram shows the spectrum of a few elements and the emission spectrum of a star. Which two elements does the star contain based on its emission spectrum?

• helium

• hydrogen

• neon

• mercury

• sodium