Courtney and kenzie are doing an experiment to determine which fish food gives their fish more energy. they have two fish tanks, each with the same number, size, and type of fish. the tanks are the same size and have identical filters and decorations. they were both filled with store-bought spring water and are cleaned at the same time. when the girls submitted their results to a journal for publication, scientists criticized the experiment.

what about the experiment would need to be changed so that scientists might accept their findings?

a) the fish would need to be fed more food.
b) the tanks would need more fish in each one.
c) there would need to be several more tanks of fish.
d) the tanks would need to have a different type of water.

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added