A student wanted to study the effect of temperature on algae levels in a local stream. Which items are most useful for gathering data and most
appropriate for communicating the results of her observations?
Select one:

Microscopes and written descriptions of weather patterns

Research on the Internet and videotapes of water samples

pH strips and written observations of stream water

Test tubes, thermometers, and graphs of results

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

What can be found in the ionosphere