Kapag malungkot ako, pwede ba ko bumili ng happy meal?

Deshawn is writing an informative essay about volcanoes. he has gathered facts and written a thesis statement. read his thesis below: a volcano eruption impacts the environment in a number of ways, from covering everything in ash to destroying the landscape. based on this thesis, how should deshawn organize his essay? ? a. he should use cause/effect, writing one paragraph that explains the link between the cause of a volcano and its effects. b. he should use comparison/contrast, writing one body paragraph describing how volcanoes impact the environment and one paragraph describing how earthquakes impact the environment. c. he should use comparison/contrast, writing one body paragraph looking at the similarities between the effects of ash and the destruction of the landscape, and one paragraph explaining the differences. d. he should use cause/effect, writing one paragraph that explains how volcanoes create ash and destruction, and one paragraph explaining each of the volcano’s effects, the ash and the destruction of landscape, in detail.

These two elements threaten ecosystem biodiversity.

Em um acidente, um caminhão carregado de solução aquosa de ácido fosfórico (h3po4) tombou, derramando cerca de 24,5 toneladas dessa solução no asfalto. quantas toneladas de óxido de cálcio (cao) seriam necessárias para reagir totalmente com essa quantidade de ácido? 2 h3po4 + 3 cao → ca3(po4)2 + 3 h2o a. 14t b. 29t c. 42t d. 7t e. 21t