How do oxbow lakes form? Rivers are dammed, and the water builds up, creating a lake.
Runoff pools in areas of low elevation, creating a temporary lake.
Rivers wear away banks until the bank is broken and the river flows straight.
Glaciers leave deep channels in the ground, which fill with water and become a lake.

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird

Why should organisms reproduce more offspring than will survive? select all that apply.

Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b. hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.