Consider the following situation carefully: In an uninhabited valley, an earthquake causes movement along a fault line, creating landslides that form a barrier across the valley. A river fills the valley, creating a small lake. The new lake provides a habitat for fish and birds.

By creating the lake ecosystem, what is the earthquake also creating?
A)
a natural disaster
B)
a service function
C)
a catastrophe
D)
a natural hazard

Which is not a type of symmetry? a. asymmetryb. radial symmetryc. bilateral symmetryd. lateral symmetry

How does photosynthesis show the conservation of mass and energy?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.