Sentences with phrase «traces of chemical changes»

Besides searching for water, geologists will use Webb to study the formation and evolution of global dust storms and cloud systems over dormant volcanoes, and search for traces of chemical changes in the atmosphere.

Not exact matches

Now, a 15 - year, 30 - nation research collective called Geotraces is embarking on an ambitious global survey of ocean chemistry to quantify trace elements and shed light on how chemical concentrations fluctuate in response to changing environmental conditions.

They traced the effect to changes in dopamine, a brain chemical that contributes to the experience of reward, and to possible changes in GABA receptors, which can act as a brake system to keep dopamine in check.

2 By studying the record of Earth's history contained in sedimentary rocks from the time just prior to the rise of animals, between 1200 and 650 million years ago, reading these rocks for clues about changing environmental conditions by chemical analysis, and systematically scouring them for traces of life — from fossils as well as chemical signatures;

[27] Ramanathan, V., Callis, L., Cess, R., Hansen, J., Isaksen, I., Kuhn, W., Lacis, A., Luther, F., Mahlman, J., Reck, R., and Schlesinger, M.: Climate - chemical interactions and effects of changing atmospheric trace gases, Rev. Geophys., 25, 1441 - 1482, 1987